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3930688 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3930688: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include end_item_identification: 4940-01-463-7940 FORWARD REPAIR SYSTEM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-437-6321, 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
3930688
NSN: 5340-01-437-6321
NIINs: 014376321, 015582048
FSC: 5340 — Hardware, Commercial
CAGE: 6M148 — CUMMINS CENTRAL POWER, LLC (USA)
SPECIFICATIONS
end_item_identification4940-01-463-7940 FORWARD REPAIR SYSTEM
NSN5340-01-437-6321
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3930688 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
SUBSTITUTES & CROSS-REFERENCES 2
3919292Reference document
Same NSN cross-reference
Reference document — Secondary reference
5683919292Reference 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 3930688?
3930688 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 3930688?
There are 2 known substitutes for 3930688: 3919292, 5683919292. Substitute compatibility should be verified for your specific system.
What is the NSN for 3930688?
3930688 is cataloged in the U.S. Government catalog under NSN 5340-01-437-6321. This indicates validated use in U.S. government and defense supply chains.
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