PartsTable / O-RING / B3-31
B3-31 — Technical Data Sheet
✓ 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
INSIGNIA,GRADE,ENLISTED PERSONNE. Key specifications include material: STEEL COMP 302, construction: ONE-PIECE, overall_width: 3.500 INCHES MAXIMUM IN, fiber_material: POLYESTER AND COTTON OR RAYON CHEVRON, overall_length: 3.000 INCHES MAXIMUM IN, user_designator: WOMAN. This part is cataloged in the Federal Logistics Information System under NSN 5331-00-291-2375, 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
B3-31
NSN: 5331-00-291-2375 FSC: 5331 — O-RINGCAGE: 76680 — FEDERAL-MOGUL CORP CHASSIS PRODUCTS DIV (USA)
SPECIFICATIONS
material STEEL COMP 302 construction ONE-PIECE overall_width 3.500 INCHES MAXIMUM IN fiber_material POLYESTER AND COTTON OR RAYON CHEVRON overall_length 3.000 INCHES MAXIMUM IN user_designator WOMAN outside_diameter 0.243 INCHES MINIMUM AND 0.248 INCHES MAXIMUM IN special_features EMBROIDERED CHEVRON AND DEVICE; DESIGNED FOR WINTER SERVICE UNIFORM aperture_diameter 0.167 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN attachment_method SEW-ON cloth-fabric_name BROADCLOTH BACKGROUND surface_treatment PASSIVATE NSN 5331-00-291-2375
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: B3-31
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
• CENTER HOLE DIAMETER: 4.594 INCHES MINIMUM AND 4.624 INCHES MAXIMUM IN
• MATERIAL: RUBBER SYNTHETIC
• CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CENTER HOLE DIAMETER 4.594 INCHES MINIMUM AND 4.624 INCHES MAXIMUM IN MATERIAL RUBBER SYNTHETIC CROSS-SECTIONAL HEIGHT 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
334116 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
623025 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
569870 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
MIL-DTL-14651 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
MIL-I-14651 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
230079137 Interchangeable GOVERNMENT REGISTRY interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED GOVERNMENT REGISTRY
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B3-31?
B3-31 is a INSIGNIA,GRADE,ENLISTED PERSONNE.
What parts can replace B3-31?
There are 14 known substitutes for B3-31: 334116, 623025, 569870 and 11 more. Substitute compatibility should be verified for your specific system.
Is B3-31 still available?
B3-31 is currently cancelled.