PartsTable
Technical Data Sheet
SH-10254 PC21 ✓ 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 5331-01-436-7658, 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
SH-10254 PC21
NSN: 5331-01-436-7658
FSC: 5331 — O-RING
CAGE: 24047 — COOPER INDUSTRIES INC DBA COOPER TOOLS (USA)
SPECIFICATIONS
Part NumberSH-10254 PC21
NSN5331-01-436-7658
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SH-10254 PC21 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 4
30-186Interchangeable
interchangeable cross-reference
interchangeable
30-189Interchangeable
interchangeable cross-reference
interchangeable
30-202Interchangeable
interchangeable cross-reference
interchangeable
30-140Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SH-10254 PC21?
SH-10254 PC21 is a O-RING.
What parts can replace SH-10254 PC21?
There are 4 known substitutes for SH-10254 PC21: 30-186, 30-189, 30-202 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SH-10254 PC21?
SH-10254 PC21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-436-7658. This indicates validated use in U.S. government and defense supply chains.
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