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Technical Data Sheet
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91027-991 — CLIP,RETAINING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91027-991: CLIP,RETAINING.

The CLIP,RETAINING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-303-3838, 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
91027-991
NSN: 5340-01-303-3838
FSC: 5340 — Hardware, Commercial
CAGE: 0BAT5 — U.S. DEFENSE SERVICES, INC. DBA USDS (USA)
SPECIFICATIONS
Part Number91027-991
NSN5340-01-303-3838
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91027-991 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
P299Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
25224539-002Reference 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 91027-991?
91027-991 is a CLIP,RETAINING.
What parts can replace 91027-991?
There are 2 known substitutes for 91027-991: P299, 25224539-002. Substitute compatibility should be verified for your specific system.
What is the NSN for 91027-991?
91027-991 is cataloged in the U.S. Government catalog under NSN 5340-01-303-3838. This indicates validated use in U.S. government and defense supply chains.
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