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L-638C2GS — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

L-638C2GS: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-024-1273, 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
L-638C2GS
NSN: 5340-01-024-1273
FSC: 5340 — Hardware, Commercial
CAGE: 3ES68 — GREENLEES FILTER LLC (USA)
SPECIFICATIONS
Part NumberL-638C2GS
NSN5340-01-024-1273
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: L-638C2GS 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
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 7
MA268C-21005Reference document
Same NSN cross-reference
Reference document — Secondary reference
2520010241273Reference document
Same NSN cross-reference
Reference document — Informative reference only
2AG402Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
0-638C2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5340PL1969148Reference document
Same NSN cross-reference
Reference document — Informative reference only
05582698Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is L-638C2GS?
L-638C2GS is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace L-638C2GS?
There are 7 known substitutes for L-638C2GS: MA268C-21005, 2520010241273, 2AG402 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L-638C2GS?
L-638C2GS is cataloged in the U.S. Government catalog under NSN 5340-01-024-1273. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.