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0-638A5 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

0-638A5: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: RUBBER, design_type: FRICTION, overall_diameter: 3.400 INCHES NOMINAL IN, tube_outside_diameter_for_which_designed: 2.800 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-197-2382, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
0-638A5
NSN: 5340-01-197-2382
FSC: 5340 — Hardware, Commercial
CAGE: 78940 — UNITED AIR FILTER, INC. (USA)
SPECIFICATIONS
materialRUBBER
design_typeFRICTION
overall_diameter3.400 INCHES NOMINAL IN
tube_outside_diameter_for_which_designed2.800 INCHES NOMINAL IN
NSN5340-01-197-2382
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0-638A5 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN TYPE: FRICTION
•
OVERALL DIAMETER: 3.400 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.800 INCHES NOMINAL IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER3.400 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.800 INCHES NOMINAL IN
MATERIALRUBBER
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 3
05582691Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5582691Reference document
Same NSN cross-reference
Reference document — Secondary reference
5340PL0826627Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 0-638A5?
0-638A5 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 0-638A5?
There are 3 known substitutes for 0-638A5: 05582691, 5582691, 5340PL0826627. Substitute compatibility should be verified for your specific system.
What is the NSN for 0-638A5?
0-638A5 is cataloged in the U.S. Government catalog under NSN 5340-01-197-2382. This indicates validated use in U.S. government and defense supply chains.
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