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PartsTable / COMPONENT / A156.1 A2112
A156.1 A2112 ✓ 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 A156.1 A2112 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 5340-00-229-4361, 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
A156.1 A2112
NSN: 5340-00-229-4361
FSC: 5340
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part NumberA156.1 A2112
NSN5340-00-229-4361
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A156.1 A2112 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
•
BODY WIDTH: 4.500 INCHES NOMINAL IN
•
MOUNTING HOLE QUANTITY: 8
•
MOUNTING HOLE DIAMETER: 0.221 INCHES NOMINAL IN
•
PIN CENTER TO BODY EDGE DISTANCE: 2.250 INCHES NOMINAL IN
•
HINGE MOUNTING TYPE: FULL MORTISE
•
PIN REMOVABILITY: NONREMOVABLE
•
KNUCKLE QUANTITY: 2 OR 5
•
REVERSIBLE FEATURE: NOT INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
BODY WIDTH4.500 INCHES NOMINAL IN
MOUNTING HOLE QUANTITY8
MOUNTING HOLE DIAMETER0.221 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE2.250 INCHES NOMINAL IN
HINGE MOUNTING TYPEFULL MORTISE
PIN REMOVABILITYNONREMOVABLE
KNUCKLE QUANTITY2 OR 5
REVERSIBLE FEATURENOT INCLUDED
SURFACE TREATMENTUNABLE TO DECODE
SURFACE TREATMENTUNABLE TO DECODE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
BHMA-A156.20Upgraded Successor
successor cross-reference
successor
MS27970-26Upgraded Successor
successor cross-reference
successor
FFH116Upgraded Successor
successor cross-reference
successor
BHMA-A156.1 A2133 3-1/2INUpgraded Successor
successor cross-reference
successor
ANSI A156.1 A2133Upgraded Successor
successor cross-reference
successor
01555Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A156.1 A2112?
A156.1 A2112 is a A156.1 A2112.
What parts can replace A156.1 A2112?
There are 17 known substitutes for A156.1 A2112: BHMA-A156.20, MS27970-26, FFH116 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A156.1 A2112?
A156.1 A2112 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-229-4361. 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