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Technical Data Sheet
PartsTable / COMPONENT / SM71-236
SM71-236 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: FRICTION, overall_diameter: 2.500 INCHES NOMINAL IN, inside_diameter_length: 0.625 INCHES NOMINAL IN, round_cap_outside_surface_condition: SMOOTH, connector_nominal_thread_size_for_which_designed: 2.250 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-837-8375, 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
SM71-236
NSN: 5340-00-837-8375
FSC: 5340
CAGE: 01417 — GENERAL DYNAMICS LAND SYSTEMS INC. (USA)
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
overall_diameter2.500 INCHES NOMINAL IN
inside_diameter_length0.625 INCHES NOMINAL IN
round_cap_outside_surface_conditionSMOOTH
connector_nominal_thread_size_for_which_designed2.250 INCHES IN
NSN5340-00-837-8375
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SM71-236 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
•
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED: 2.250 INCHES IN
•
OVERALL DIAMETER: 2.500 INCHES NOMINAL IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
•
INSIDE DIAMETER LENGTH: 0.625 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
DESIGN TYPE: FRICTION
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTOR NOMINAL THREAD SIZE FOR WHICH DESIGNED2.250 INCHES IN
OVERALL DIAMETER2.500 INCHES NOMINAL IN
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
INSIDE DIAMETER LENGTH0.625 INCHES NOMINAL IN
MATERIALPLASTIC
DESIGN TYPEFRICTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
70345Interchangeable
interchangeable cross-reference
interchangeable
7034500Interchangeable
interchangeable cross-reference
interchangeable
522599Interchangeable
interchangeable cross-reference
interchangeable
EC36Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM71-236?
SM71-236 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace SM71-236?
There are 4 known substitutes for SM71-236: 70345, 7034500, 522599 and 1 more. Substitute compatibility should be verified for your specific system.
Is SM71-236 still available?
SM71-236 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026