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Technical Data Sheet
PartsTable / O-RING / 620A1280
620A1280 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The O-RING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-392-9897, 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
620A1280
NSN: 5331-01-392-9897
FSC: 5331 — O-RING
CAGE: R2934 — BUKH A/S (DNK)
SPECIFICATIONS
Part Number620A1280
NSN5331-01-392-9897
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 620A1280 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
ASTM-D5118 TYCFVASWGR275STRSCCLDInterchangeable
interchangeable cross-reference
interchangeable
ASTM-D1974Interchangeable
interchangeable cross-reference
interchangeable
8681Interchangeable
interchangeable cross-reference
interchangeable
211570Interchangeable
interchangeable cross-reference
interchangeable
31433HInterchangeable
interchangeable cross-reference
interchangeable
634303Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 620A1280?
620A1280 is a O-RING.
What parts can replace 620A1280?
There are 10 known substitutes for 620A1280: ASTM-D5118 TYCFVASWGR275STRSCCLD, ASTM-D1974, 8681 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 620A1280?
620A1280 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-392-9897. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026