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Technical Data Sheet
PartsTable / COMPONENT / SM-B-187283
SM-B-187283 ✓ 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 STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: POST,ELECTRICAL-MECHANICAL EQUIPMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-611-3451, 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
SM-B-187283
NSN: 5340-00-611-3451
FSC: 5340
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyPOST,ELECTRICAL-MECHANICAL EQUIPMENT
NSN5340-00-611-3451
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SM-B-187283 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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYPOST,ELECTRICAL-MECHANICAL EQUIPMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
88-34004-2RAInterchangeable
interchangeable cross-reference
interchangeable
55967Interchangeable
interchangeable cross-reference
interchangeable
33075Interchangeable
interchangeable cross-reference
interchangeable
A1232Interchangeable
interchangeable cross-reference
interchangeable
184-5102-720Interchangeable
interchangeable cross-reference
interchangeable
M39018/03-1031MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-B-187283?
SM-B-187283 is a STANDOFF,THREADED,SPACING.
What parts can replace SM-B-187283?
There are 7 known substitutes for SM-B-187283: 88-34004-2RA, 55967, 33075 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-187283?
SM-B-187283 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-611-3451. 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