Par 1007 Page 193 NOTE: Units or components that will be returned to the OEM for cleaning, inspection, and repair should be tagged to indicate date of cleaning, cleaning method and materials used, and type of preservation applied.
c. Initial Screening Procedure. Avionics equipment that is damaged beyond the capability of the operator or operating unit to clean, inspect, repair, test, and preserve will normally be forwarded to an avionics repair station for disposition. Upon receipt, the avionics repair station should screen the affected equipment and records to determine the following:
(1) Extent of damage (reported or observed),
(2) Local repair capability,
(3) Cleaning methods used at operator/unit activity,
(4) Drying methods used at operator/unit activity, and
(5) Preservation methods used at operator/unit activity.
d. Cleaning Priority. After initial screening, the cleaning priority needs to be established by the emergency reclamation team leader. Table 10-1 will aid in determining the cleaning priority.
e. Disassembly Inspection Procedures. The extent of damage from saltwater, fire extinguishing agents, smoke, fire, heat, etc., must be determined. Most avionics equipment contains dissimilar metals and particular attention should be given to those dissimilar metal couples. Avionics equipment exposed to saltwater, fire extinguishing agents, smoke, fire, heat, etc., should be cleaned, disassembled, and visually examined as follows:
(1) Remove Corrosion Preventive Compounds, dirt, and grime with Dry Cleaning Solvent, MIL-PRF-680, Type II, to facilitate inspection.
(2) Remove all covers, access panels, modules, and normally removed components.
(3) Visually examine the individual items thoroughly for evidence of saltwater intrusion, fire extinguishing agents, smoke, fire, heat damage, etc.
(4) Visually examine the individual items for evidence of corrosion. Particular attention should be focused on areas of dissimilar metal couples.
(5) Visually examine encapsulated and conformal-coated laminated circuit boards for damage caused by saltwater intrusion, fire extinguishing agents, and cleaning solvents. Pay particular attention to conformal coatings and circuit board laminates that are discolored, softened, or deformed.
(6) Visually examine electrical cables, wires, and harnesses for signs of damage and deterioration from cleaning solvents. Pay particular attention to any signs of discoloration, softening, or cracked wire coating.
Par 1007 Page 194
(7) Disassemble and inspect electrical connectors and receptacles for damage and signs of corrosion. Pay particular attention to seals and gaskets.
(8) Visually examine hermetically sealed components for signs of broken seals and corrosion damage. Units with broken seals should be disassembled for further inspection or forwarded to the OEM for disposition.
(9) Visually examine electrical motors, generators, inverters, miniature synchro transmitters, and receivers for damage. Pay particular attention to lubricated fittings and sealed bearings.
(10) Visually examine control boxes and instruments for damage and corrosion. Pay particular attention to areas around switch toggles and knobs, hardware, interior components, and under faceplates, rubber boots, and mounting areas.
(11) Visually examine component identification and modification plates for evidence of corrosion. Pay particular attention to the condition of the fillet seal around the periphery of the plates.
(12) Visually examine shock mounts, mounting racks, cases, chassis, and cover plates for corrosion. Pay particular attention to evidence of buckling and heat damage. Check painted surfaces for cracks, nicks, and peeling. Pay particular attention to the condition of rubber shock mounts.
f. Undamaged Items. Avionics components that show no visual signs of damage should be functionally checked in accordance with the OEM maintenance instructions. The avionics component may be returned to the operator level in accordance with established procedures.
g. Damaged Items. Avionics components that show signs of damage should be repaired and functionally checked per the OEM maintenance instructions in accordance with established procedures.
h. Emergency Cleaning and Preservation Procedures. Cleaning and preservation procedures are as follows:
(1) Avionics equipment exposed to saltwater, fire extinguishing agents, smoke, fire, heat, field-applied cleaning solutions, etc., and cleaned and decontaminated at the operator or unit level should be inspected for damage in accordance with subparagraph 1007e. Corrosion removal, treatment, restoration of protective finishes, and preservation should be in accordance with Chapters 4 and 5.
(2) Avionics equipment exposed to saltwater, fire extinguishing agents, smoke, fire, heat, etc., that were not cleaned and decontaminated at the operator or unit level should be cleaned, inspected, repaired, and preserved as follows:
(a) Clean using the primary cleaning method detailed in subparagraph 1004b.
Par 1007 Page 195
(b) Inspect for damage in accordance with subparagraph 1007e, and the OEM maintenance instructions.
(c) Disposition in accordance with established procedures and the OEM maintenance instructions.
(d) Preserve in accordance with Chapter 4, paragraph 407.
(3) Avionics equipment that requires disposition and repair by the OEM should be cleaned, dried, preserved, and tagged in accordance with paragraphs 1004b, 1005, and 1006a(9).
1008. through 1100. RESERVED.
Appendix 1 APPENDIX 1. CONSUMABLE SUPPLIES AND MATERIALS
1-1. INTRODUCTION.
This appendix lists many of the acceptable type consumable supplies and materials available for avionics corrosion control.
1-2. SCOPE.
Table 1-1 provides consumable supplies and materials used for avionics cleaning and corrosion control. The table contains the product nomenclature/specification, application, and manufacturer’s designation. Items in this table are located by function in the following groupings:
Grouping Page(s)
a. Abrasives2
b. Cleaning compounds, solvents, and thinners3-4
c. Corrosion preventive compounds4
d. Lubricating oils and greases4-5
e. Cleaning cloth5-6
f. Sealants6
g. Potting compounds6-7
h. Masking materials and tapes7
i. Conformal coatings7-8
j. Neutralizing agents8
k. Chemical conversion coatings8
l. Paint, primers, and strippers8-9
m. Packaging materials9-10
n. Tracers10
Appendix 1 TABLE 1-1. AVIONICS CLEANING AND CORROSION REMOVAL CONSUMABLE
MATERIALS ITEM NO.
NOMENCLATURE/PRODUCT
SPECIFICATION
APPLICATION
ABRASIVES
1. Abrasive Mat. Aluminum Oxide Abrasive, A-A-58054, Grade A, Class 1 (Very Fine), or A-A-58054, Grade B, Class 1 (Fine) Removal of dirt and corrosion products from external avionics chassis, covers, mountings, hardware, antennas, electrical connector shells, etc.
2. Cleaning and Polishing Pad, Nonabrasive Removal of dirt and contaminants from internal avionics structures, laminated circuit boards, wave-guides, TR tubes, cavities, circuit components, relay contacts, control box face plates, etc.
3. Cloth, Abrasive Aluminum Oxide A-A-1048, 320-Grit, Type 1, Class 1 Removal of heavy corrosion products from steel, iron, aluminum, and magnesium structures, mountings, racks, chassis, covers, etc. Scuff sanding of avionics boxes prior to painting, etc.
CAUTION: Do not use Silicon Carbide Abrasive Cloth, A-A-1048.
4. Eraser, Magic Rub, Plastic, A-A-132-14, 2-1/4 x 7/8 x 7/16", (Block Shape, Beveled Ends) Removal of light tarnish on silver. Removal of light corrosion on copper, zinc, nickel, etc. For brightening of gold.
CAUTION: Use only on components that are sufficiently rigid to resist rubbing motion.
5. Eraser, Ruby Red A-A-132-3, 2-3/4 x 3/4 x 1/4 inch, (Rectangular Shape, Beveled Ends) Removal of light tarnish on silver. Removal of medium corrosion on copper, zinc, nickel, etc. For brightening of gold.
CAUTION: Use only on components that are sufficiently rigid to resist rubbing motion.
6. Eraser, Wood or Paper Encased, A-A-132-13, 6 inch x 3/16 inch diameter, (Pencil Shape) Removal of medium tarnish and corrosion products in tight areas.
CAUTION: Care should be taken not to remove thinly plated surfaces.
7. Eraser, Typewriter A-A-132-9, 7 inch x 3/16 inch diameter, (Pencil Shape) Removal of heavy tarnish on silver. Removal of heavy corrosion on copper, zinc, nickel, etc.
CAUTION: Care should be taken not to remove thinly plated surfaces.
Appendix 1 ITEM NO.
NOMENCLATURE/PRODUCT
SPECIFICATION
APPLICATION
CLEANING COMPOUNDS, SOLVENTS, AND THINNERS CAUTION: Cleaning solvents may react with coatings and circuit components. When in doubt as to the reaction, test the affected area prior to wholesale application of solvent.
NOTE: Local air pollution regulations may restrict the use of the listed solvents. Comply with all local air pollution regulations.
8. Detergent, Liquid Nonionic, MIL-D-16791, Type I For cleaning and polishing transparent plastic and glass.
Note: Mix per manufacturer’s instructions or not more than 1 oz. per gal. of water. Also used for detergent in aqueous ultrasonic cleaners and aqueous spray cleaning booths.
9. Cleaning Compound, MIL-PRF-85570, Type II General cleaning. For removal of soil and fire extinguishing chemicals. Excellent cleaner for light oils and hydraulic fluids.
10. Cleaning Compound, Solvent, Trichlorotrifluoroethane, MIL-C-81302, Type II For use only in vapor degreasers.
11. Cleaning Compound, Solvent Trichlorotrifluoroethane, MIL-C-81302, Type I (Ultra-clean) For use only in vapor degreasers.
12. Dry Cleaning Solvent, MIL-PRF-680, Type II For general purpose cleaning of structural hardware, cases, covers, mountings, etc. For removal of heavy dirt, smoke damage, contaminants, fire extinguishing chemicals, and water-displacing preservatives.
WARNING: MIL-PRF-680, Type I has a lower flash point of 100 °F (38 °C) and is not authorized for avionics cleaning.
13. Naphtha, Aliphatic, TT-N-95B, Type II For removal of polychlorinated biphenyl and silicone contaminants.
WARNING: Aliphatic Naphtha has a flash point of
60.8 °F (16 °C).
14. Isopropyl Alcohol, TT-I-735 For removal of fungus and bacteria. For removal of Van Waters and solder flux residue. For removal of contaminants on microminiature circuit components.
For general cleaning and removal of salt residue and contaminants from circuit components.
WARNING: Isopropyl Alcohol has a flash point of 53 °F (12 °C).
15. Spray Cleaning Lubricating Compound, MIL-PRF-29608, Type I Cleaner and lubricant for use on small switches and potentiometers where a residual lubricant is required after cleaning. Contains 5% silicone.
Appendix 1 ITEM NO.
NOMENCLATURE/PRODUCT
SPECIFICATION
APPLICATION
16. Thinner, Acrylic Nitrocellulose Lacquer, MIL-T-19544 Thinner for Lacquer, Acrylic Nitrocellulose MIL-L-19538C, MIL-C-22750, epoxy topcoats, Item No. 59 and 60, and MIL-P-23377 primer, Item No. 58.
17. Thinner, Paint, Petroleum Spirits TT-T-291, Type III Removal of preservative compounds.
CAUTION: Do not use on lacquers or synthetic resin base enamels.
18. Thinner, Synthetic Resin, Enamels A-A-3007 Used for thinning varnish, MIL-V-173C, Item No. 51.
CAUTION: Do not use in lacquers.
19. Thinner, Aliphatic Polyurethane Coating, MIL-T-81772, Type I (Polyurethane) Type II (Epoxy) Type III (Lacquer) For thinning urethane and polyurethane topcoats, MIL-C-83286B, and MIL-PRF-85285, Item No. 61 and 63; epoxy polyamide coatings, MIL-C-22750, Item No. 60; acrylic nitrocellulose lacquers, MIL-L-19538C, Item No. 59; and primer, MIL-P-23377, Item No. 58.
CORROSION PREVENTIVE COMPOUNDS (PRESERVATIVE)
WARNING: Do not use Corrosion Preventive Compounds around oxygen, oxygen fittings, or oxygen regulators, since fire or explosion may result.
20. Corrosion Preventive Compound, Water-Displacing, Ultra-Thin Film, Avionics Grade, MIL-PRF-81309, Type III, Class 2 (Aerosol) For use on highly critical electrical connectors’ metal surfaces. For use in interior areas. Not intended for exterior areas exposed to the elements.
21. Corrosion Preventive Compound, Water-Displacing, Ultra-Thin Film, MIL-PRF-81309, Type II, Class 2 (Aerosol), Class 1 (Bulk) For use on all exposed metal and hardware on external chassis, covers, etc. Not intended for exterior areas exposed to the elements.
22. Corrosion Preventive Compound, Water-Displacing, Clear, MIL-DTL-85054, Type I (Aerosol) Water-displacing corrosion preventive. For use on all external surfaces exposed to elements and moisture. For use on chassis, mounting racks, terminal boards, hardware, bus bars, ground straps, etc.
23. Corrosion Preventive Compound, Solvent Cutback, Cold Application MIL-PRF-16173, Grade 4 (Transparent Film) For use on equipment racks, mounts, exposed hardware, etc. For use on exterior surfaces of electrical plugs and connectors. Not intended as a water-displacing compound.
LUBRICATING OILS AND GREASES
24. Lubricating Oil, General Purpose, Preservative (Water-Displacing), MIL-PRF-32033 General lubricating and protection of avionics components, hinges, and quick release devices. Suitable for use where a general purpose lubricating oil with low temperature and corrosion preventive properties is desired.
Appendix 1
25. Grease, Instrument, Ultra-clean, MIL-G-81937 For lubrication of bearings in instruments and related components such as synchros and gyros. Ideally suited for bearings having small tolerances with respect to clearance.
26. Lubricating Oil Instrument, Ball Bearing, High Flash Point, MIL-L-81846 For use in precision instruments and miniature ball bearings. Temperature range of -65 °F (-54 °C) to 302 °F (150 °C).
27. Grease, Aircraft, General Purpose, Wide Temperature Range, MIL-G-81322 For use on blower motors, servomotors, and gyro spin motors.
28. Lubricating Solid Film, Air-Cured, Corrosion Inhibiting, MIL-L-23398 For use on aluminum alloys, copper and copper alloys, steel, stainless steel, titanium, and chromium and nickel bearing surfaces. For use on sliding motion applications such as locks, small internal cables, plain and spherical bearings, tracks, hinges, threads, and cam surfaces. For use in mechanisms that are lubricated for life, and in mechanisms operated at infrequent intervals.
CAUTION: Not to be used in operations consisting of rotary motion over 100 revolutions per minute (rpm) under heavy loads where the possibility of conventional fluid lubricant contamination exists.
Not to be used on bearings containing rolling elements.
CLEANING CLOTH
29. Cloth, Cleaning, Non-Woven Fabric, CCC-C-46, Class 7 No lint, extra heavy duty, moderate wet strength, good absorbency, and disposable. For use when good wet strength and short term rewetting is required, and for wiping critical avionics equipment.
WARNING: Not approved for use in wiping plastic and acrylic surfaces with solvents having a flash point of less than 100 °F (38 °C).
30. Cloth, Cleaning, Lint-Free, MIL-C-85043, Type I or Type II Very low lint, relatively low absorbency, good wet strength, intended for wash and reuse. For use on critical surfaces where low contamination levels are required. Type I preferred for clean room applications.
CAUTION: Not authorized for use with solvents having a flash point of less than 100 °F (38 °C).
31. Cloth, Cheesecloth, Cotton, CCC-C-440, Type II, (28 x 24 weave), Class 1, Unbleached, or Class 2, Bleached Moderate lint, high absorbency, high wet strength, reusable after washing, and disposable. For general cleaning on exterior surfaces of avionics equipment.
For use as a tack rag and final wipe prior to painting.
Appendix 1
32. Cotton, Flannel, CCC-C-458, Type II (plain weave, unbleached, napped both sides, 4.6 oz. weight) High lint, high absorbency, high wet strength, reusable after washing, and disposable. For use on cockpit indicator glass covers, plastic and acrylic control panels.
NOTE: Only authorized cloth for use in cleaning plastic and acrylics with solvents that have a flash point of less than 100 °F (38 °C).
SEALANTS
33. Adhesive-Sealant Silicone, Room Temperature Vulcanizing (RTV), Noncorrosive, 3145 RTV, MIL-A-46146, Type III For use on sensitive metals and avionics equipment.
Sealing areas where temperature is expected to be between 250 °F (121 °C) and 350 °F (177 °C).
34. Sealing Compound, Polysulfide, MIL-PRF-81733, Type I (Brush Application), Type II (Spatula Application) Contains corrosion inhibitors. For use in sealing gaps, seams, etc. For use up to 250 °F (121 °C).
35. Sealing Compound, SAE-AMS-S-83318 A quick-cure sealant that contains corrosion inhibitors.
For use in sealing gaps, seams, etc., during extreme cold weather activities.
36. Sealing Compound, Temperature-Resistant, Integral Fuel Tanks, SAE-AMS-S-8802, Type A, Class 2 (Brush Application) or Type B, Class 2 (Spatula Application) Sealing of gaps, seams, and faying surfaces. For use up to 250 °F (121 °C). Use when MIL-PRF-81733 is not available.
POTTING COMPOUNDS CAUTION: Potting Compounds Pro-Seal 777A/B (green) and EC-2273 (black) have experienced reversion to a liquid after 2 to 4 years of service depending on the environment. Not recommended for use in electrical connectors and avionics equipment.
37. Sealing Compound, Synthetic Rubber, Accelerated, MIL-PRF-8516 Class 1 (24 hr. cure) or Class 2 (48 hr. cure) or Class 3 (72 hr. cure) For sealing low voltage electrical connectors, wiring, and other electrical apparatus against moisture and corrosion where temperature will not exceed 200 °F (93 °C). Good resistance to gasoline, oils, grease, water, and humidity.
CAUTION: Not authorized for use in engine bays, keel areas, or areas adjacent to bleed air ducts.
38. Sealing Compound, Silicone Rubber, Room Temperature RTV, MIL-S-23586, Type II, Class 2, Grade A For sealing small electrical connectors in well-ventilated areas where the operating temperature normally exceeds 200 °F (93 °C), but does not exceed 450 °F (232 °C). Good resistance to weathering and moisture, and withstands ozone.
CAUTION: Restricted to well-ventilated areas due to volatile cure.
Appendix 1
39. Sealing Compound, Silicone Rubber, RTV, MIL-S-23586, Type I, Class 1, Grade B-1 For sealing or encasement of electrical connectors and electronic components where the operating temperature normally exceeds 200 °F (93 °C), but does not exceed 450 °F (232 °C). Good resistance to weathering and moisture, and withstands ozone.
NOTE: Does not contain cure volatiles as MIL-S-23586, Type II, Class 2, Grade A.
MASKING MATERIALS AND TAPES
40. Preservation and Sealing Tape, Pressure Sensitive Adhesive, MIL-T-22085, Type II For holding barrier material in place during shipping.
Treated, noncorrosive, non-fungus supporting. For use on equipment without overcoating.
41. Tape, Pressure Sensitive Adhesive, Paper Masking, Non-staining, MIL-T-21595, Type I For masking of undamaged areas during paint touch-up on equipment cases, covers, mounting racks, etc. For masking electrical and electronic components during replacement of conformal coatings and varnishing.
CAUTION: Use only if component is sufficiently rigid to withstand application and removal of tape.
42. Tape, Pressure Sensitive Adhesive, MIL-T-23397, Type II For masking during paint stripping operations on avionics equipment and airframe structure.
43. Tape, Pressure Sensitive, MIL-T-23142 For isolating dissimilar metals where galvanic action may take place in avionics equipment.
44. Insulating Tape Electrical, Self Bonding, Silicone Used to wrap electrical wire bundles and connectors exposed to harsh environments.
45. Paper, Kraft, Untreated, Wrapping, UU-P-268 Protection of surrounding areas during paint spray operations. General-use masking.
CONFORMAL COATINGS NOTE: Materials listed are for general purpose use on conformal coated circuit boards. For special applications on highly critical components, refer to the OEM’s maintenance manual.
46. Epoxy Coating, Two-Part Application For coating and patching epoxy- and parylene-coated circuit boards and components.
47. Polyurethane Coating (Brush Application) For coating and patching polyurethane and varnish coated circuit boards and components.
48. RTV Coating, Nonflowable (Brush Application), 738 RTV (White) MIL-A-46146, Type I For coating and patching RTV coated circuit boards and components.
NOTE: Will not flow into crevices or other hard to reach places.
49. RTV Coating, Flowable (Brush Application), 3140 RTV (Clear) MIL-A-46146, Type III For coating and patching RTV coated circuit boards and components.
NOTE: Use in applications where a flowable material is required, such as potting connectors.
50. Acrylic Coating For coating and patching of acrylic and lacquer coated circuit boards and components.
Appendix 1
51. Varnish, MIL-V-173C Moisture and fungus resistant for electrical equipment and for clear coating on copper. For coating and patching of varnish coated circuit boards.
NOTE: Thinner: see Item No. 18.
NEUTRALIZING AGENTS
52. Sodium Bicarbonate, Technical, O-S-576 For neutralizing spilled sulfuric acid (electrolyte) in lead acid battery installations. For neutralizing leaking tantalum capacitors in avionics equipment.
53. Sodium Phosphate, Monobasic, Anhydrous, Technical, AWWA B504-18 For neutralizing spilled potassium hydroxide (electrolyte) in nickel-cadmium and silver-zinc battery installations. Also used as an abrasive material in miniabrasive cleaning units.
CHEMICAL CONVERSION COATINGS
54. Boric Acid, A-A-59282 For neutralizing electrolyte leakage from nickel-cadmium batteries.
55. Chemical Conversion Material for Coating Aluminum and Aluminum Alloys, MIL-DTL-81706, Class 1A or Class 3 Used to conversion coat bare aluminum. Class 1: used for general conversion coating of aluminum. Class 3:
used for conversion coating of aluminum where lower electrical resistance is required.
56. Chemical Conversion Material for Coating Magnesium Alloys, SAE-AMS-M-3171, Type VI Used to conversion coat bare magnesium.
PAINT, PRIMERS, AND STRIPPERS
57. Epoxy Primer, Water Reducible, MIL-P-85582, Class II, Class I Covers low-moisture sensitivity, corrosion-inhibited primer. Intended for spray application on surface treated metal. Low Volatile Organic Compound (VOC).
58. Primer Coating, Epoxy Polyamide, MIL-P-23377, Type II Covers low-moisture sensitivity, corrosion-inhibited primer. Intended for spray application on surface treated metal.
59. Lacquer, Acrylic Nitrocellulose, MIL-L-19538C (Lusterless) Used for cockpit instrument, control box, and avionics box touch-up. For equipment markings.
60. Coating, Epoxy-Polyamide, MIL-C-22750 Used as a topcoat on all avionics equipment.
NOTE: Mix only materials from the same kit (the brand and batch numbers on the pigmented compound can must be the same as those on the converter can).
61. Coating, Urethane, Aliphatic, Isocyanate, MIL-C-83286B Used as a topcoat on all avionics equipment. Touch-up of polyurethane paint systems. (Noncompliant.)
62. Coating, Aliphatic Polyurethane, Single Component, MIL-C-53039 Used as a topcoat on all avionics equipment.
63. Coating, Polyurethane High Solids, MIL-PRF-85285, Type I and Type II Type I used as a topcoat on all avionics equipment.
420 grams/liter maximum VOC.
Appendix 1 Type II used as a preferred topcoat for ground support equipment. 340 grams/liter maximum VOC.
64. Coating Compound, Bituminous Solvent Type, Black, MIL-C-450, Low Solids Spraying Consistency or Medium Solids Brush and Spray Consistency Petroleum asphalt base. Excellent acid resistance. For use on wood or metal battery boxes. Drying time: 30 to 60 minutes.
NOTE: Thinner: Petroleum Spirits, TT-T-291, Item No. 18.
65. Epoxy Paint Remover, QPL-81294 Removal of paint finishes.
66. Polyethylene Foam, PPP-C-1752, Type II 1/2" x 4' x 125', in rolls For cushioning equipment and protection against shock, on shelves, work benches, pallets, etc.
NOTE: Use double layers for heavy equipment.
PACKAGING MATERIALS
67. Cushioning Material, Plastic Open Cell, PPP-C-1842, Type III, Style A;
Type III, Style B;
Width 12", 24", and 48" in rolls To protect ESD-sensitive items from damage due to shock, vibration, corrosion, and abrasion during handling and shipment.
68. Cushioning Material, Cellular Plastic Film (Bubble Wrap), PPP-C-795, Class 1 or Class 3 Width 12", 24", and 48" in rolls For cushioning equipment and protection against shock.
Provides limited protection against moisture. Seal with pressure-sensitive tape, MIL-T-22085, Item No. 40.
69. Unicellular Polypropylene Packaging Foam, PPP-C-1797 Width 12", 24", and 48" in rolls Lint-free, non-dusting, nonabrasive. For cushioning equipment and protection against shock. Provides protection against moisture. Use in conjunction with Barrier Material, Water Vapor Proof, MIL-B-131, Item No. 72. Seal with pressure-sensitive tape, MIL-T-22085, Item No. 40.
70. Bags, Plastic (General Purpose), PPP-B-26 For protecting miniature and microminiature circuit components and laminated circuit boards against moisture and contamination. Considered for short-term, temporary protection during maintenance operation.
71. Barrier Material, Water Vapor proof, Greaseproof, Flexible, Heat-Sealable, MIL-B-131, Class 1, 48" x 200 yd. roll For protecting miniature and microminiature circuit components and laminated circuit boards against moisture and contamination. Heat-sealable. Protects material during transportation, storage, and in all weather conditions.
72. Barrier Material, Water Vapor proof, Protective, Electrostatic and Electromagnetic Shielding, MIL-B-81705, Type I Provides ESD and electromagnetic interference (EMI) packaging protection for hardware and components.
May be used for long or short-term protection. Can be heat-sealed.
73. Barrier Material, Water Vapor proof, Protective, Electrostatic and Electromagnetic Static Dissipative, MIL-B-81705, Type II Provides ESD and EMI packaging protection for hardware and components. May be used for long or short-term protection. Can be heat-sealed.