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Technical Data Sheet
B512581 ✓ 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 RING,WIPER 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 5330-01-282-8394, 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
B512581
NSN: 5330-01-282-8394
FSC: 5330
CAGE: 91940 — ORTMAN FLUID POWER QUINCY COMPRESSOR DIV SUB OF COLTEC INDUSTRIES INC (USA)
SPECIFICATIONS
Part NumberB512581
NSN5330-01-282-8394
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B512581 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 3
A2921Interchangeable
interchangeable cross-reference
interchangeable
5228Interchangeable
interchangeable cross-reference
interchangeable
B512581 ITEM 17Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B512581?
B512581 is a RING,WIPER.
What parts can replace B512581?
There are 3 known substitutes for B512581: A2921, 5228, B512581 ITEM 17. Substitute compatibility should be verified for your specific system.
What is the NSN for B512581?
B512581 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-282-8394. This indicates validated use in U.S. government and defense supply chains.
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