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Technical Data Sheet
PartsTable / O-RING / AS568-026/AMS7271
AS568-026/AMS7271 ✓ 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 AS568-026/AMS7271 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 5331-00-882-7337, 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
AS568-026/AMS7271
NSN: 5331-00-882-7337
FSC: 5331 — O-RING
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
Part NumberAS568-026/AMS7271
NSN5331-00-882-7337
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS568-026/AMS7271 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 OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
•
HARDNESS RATING: 65.0 SHORE DUROMETER A NOMINAL
•
OUTSIDE DIAMETER: 1.379 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.229 INCHES MINIMUM AND 1.249 INCHES MAXIMUM IN
•
TEMP RATING: -70.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER POLYESTER URETHANE CLASS AU OR RUBBER POLYETHER URETHANE CLASS EU
HARDNESS RATING65.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER1.379 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.229 INCHES MINIMUM AND 1.249 INCHES MAXIMUM IN
TEMP RATING-70.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
AMS 7271HInterchangeable
interchangeable cross-reference
interchangeable
2-275 N506-65Interchangeable
interchangeable cross-reference
interchangeable
AS3578-275Interchangeable
interchangeable cross-reference
interchangeable
2-03154Interchangeable
interchangeable cross-reference
interchangeable
AS3578-278Interchangeable
interchangeable cross-reference
interchangeable
5331PL1279487Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS568-026/AMS7271?
AS568-026/AMS7271 is a AS568-026/AMS7271.
What parts can replace AS568-026/AMS7271?
There are 22 known substitutes for AS568-026/AMS7271: AMS 7271H, 2-275 N506-65, AS3578-275 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS568-026/AMS7271?
AS568-026/AMS7271 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-882-7337. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026