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Technical Data Sheet
PartsTable / COMPONENT / BSR-1A
BSR-1A ✓ 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 BUCKLE is a the manufacturer industrial component. Key specifications include insignia: NOT INCLUDED, overall_width: 1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-346-2289, 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
BSR-1A
NSN: 5340-01-346-2289
FSC: 5340
CAGE: 70474 — AMERICAN CORD & WEBBING CO INC DIV AMERICAN CORD AND WEBBING (USA)
SPECIFICATIONS
insigniaNOT INCLUDED
overall_width1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
NSN5340-01-346-2289
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BSR-1A 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
•
INSIGNIA: NOT INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH1.220 INCHES MINIMUM AND 1.280 INCHES MAXIMUM IN
INSIGNIANOT INCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
SR-1Upgraded Successor
successor cross-reference
successor
SR1KInterchangeable
interchangeable cross-reference
interchangeable
3CInterchangeable
interchangeable cross-reference
interchangeable
5096-3CInterchangeable
interchangeable cross-reference
interchangeable
SR-1-2652Interchangeable
interchangeable cross-reference
interchangeable
70200750365Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BSR-1A?
BSR-1A is a BUCKLE.
What parts can replace BSR-1A?
There are 9 known substitutes for BSR-1A: SR-1, SR1K, 3C and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BSR-1A?
BSR-1A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-346-2289. 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