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SG1251 — Technical Data Sheet

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— · 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 SEAL RING,METAL is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System under NSN 5330-00-534-0169, 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
SG1251
NSN: 5330-00-534-0169
FSC: 5330
CAGE: 35311 — AMERICAN STANDARD INC WESTINGHOUSE AIR BRAKE CO DIV (USA)
SPECIFICATIONS
Part NumberSG1251
NSN5330-00-534-0169
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SG1251 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 17
P1062InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
B183326InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
608762InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
203028InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6283001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
P1062EGInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SG1251?
SG1251 is a SEAL RING,METAL.
What parts can replace SG1251?
There are 17 known substitutes for SG1251: P1062, B183326, 608762 and 14 more. Substitute compatibility should be verified for your specific system.
Is SG1251 still available?
SG1251 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026