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AS139-SR728A-65 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS139-SR728A-65: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-225-6343, 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
AS139-SR728A-65
NSN: 5331-01-225-6343
FSC: 5331 — O-ring
CAGE: 95272 — STILLMAN SEAL CORPORATION DIV STILLMAN SEAL CORPERATION (USA)
SPECIFICATIONS
Part NumberAS139-SR728A-65
NSN5331-01-225-6343
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS139-SR728A-65 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
SUBSTITUTES & CROSS-REFERENCES 5
803-2177934-X7XX-45MODSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1545001Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2-139E688-70Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ARP568-139 MIL- G-22050-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS568-139Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS139-SR728A-65?
AS139-SR728A-65 is a O-RING.
What parts can replace AS139-SR728A-65?
There are 5 known substitutes for AS139-SR728A-65: 803-2177934-X7XX-45MOD, 1545001, 2-139E688-70 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS139-SR728A-65?
AS139-SR728A-65 is cataloged in the U.S. Government catalog under NSN 5331-01-225-6343. This indicates validated use in U.S. government and defense supply chains.
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