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PartsTable / COMPONENT / ANSI A156.20 A81211
ANSI A156.20 A81211 ✓ 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 ANSI A156.20 A81211 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 5340-00-243-3251, 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
ANSI A156.20 A81211
NSN: 5340-00-243-3251
FSC: 5340
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part NumberANSI A156.20 A81211
NSN5340-00-243-3251
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ANSI A156.20 A81211 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
•
KNUCKLE TYPE: FRICTION
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
PIN CENTER TO BODY EDGE DISTANCE: 8.000 INCHES NOMINAL IN
•
UNABLE TO DECODE: UNABLE TO DECODE
•
PERFORMANCE TYPE: NOT RATED
•
BODY WIDTH: 3.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAP
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS (FLIS)
KNUCKLE TYPEFRICTION
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE8.000 INCHES NOMINAL IN
UNABLE TO DECODEUNABLE TO DECODE
PERFORMANCE TYPENOT RATED
BODY WIDTH3.000 INCHES NOMINAL IN
STYLE DESIGNATORSTRAP
MATERIALSTEEL BODY
KNUCKLE QUANTITY3
REVERSIBLE FEATURENOT INCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
SC922Upgraded Successor
successor cross-reference
successor
FFH116Upgraded Successor
successor cross-reference
successor
ANSI/ BHMA A156.20- A81221Upgraded Successor
successor cross-reference
successor
6700-292050Upgraded Successor
successor cross-reference
successor
ANSI A156.20 A81211Upgraded Successor
successor cross-reference
successor
BHMA-A156.20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ANSI A156.20 A81211?
ANSI A156.20 A81211 is a ANSI A156.20 A81211.
What parts can replace ANSI A156.20 A81211?
There are 24 known substitutes for ANSI A156.20 A81211: SC922, FFH116, ANSI/ BHMA A156.20- A81221 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ANSI A156.20 A81211?
ANSI A156.20 A81211 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-243-3251. 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