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000639125 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

000639125: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, end_item_identification: 2 1/2 INCH NO.51 BUTTERFLY VALVE HARD SEAT ASSEMBLY IN, part_name_assigned_by_controlling_agency: SEAT O-RING,BUNA-N. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-503-1044, 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
000639125
NSN: 5331-01-503-1044
FSC: 5331 — O-ring
CAGE: 76588 — CORE INDUSTRIES INC. DBA MUELLER STEAM SPECIALTY (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
end_item_identification2 1/2 INCH NO.51 BUTTERFLY VALVE HARD SEAT ASSEMBLY IN
part_name_assigned_by_controlling_agencySEAT O-RING,BUNA-N
NSN5331-01-503-1044
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 000639125 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
KEY FEATURES
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAT O-RING,BUNA-N
END ITEM IDENTIFICATION2 1/2 INCH NO.51 BUTTERFLY VALVE HARD SEAT ASSEMBLY IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 2
2.5-51-08-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AN-2.5-51 PART NO.17Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 000639125?
000639125 is a O-RING.
What parts can replace 000639125?
There are 2 known substitutes for 000639125: 2.5-51-08-3, AN-2.5-51 PART NO.17. Substitute compatibility should be verified for your specific system.
What is the NSN for 000639125?
000639125 is cataloged in the U.S. Government catalog under NSN 5331-01-503-1044. This indicates validated use in U.S. government and defense supply chains.
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