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PartsTable / COMPONENT / 25958
25958 ✓ 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

WEB,STRUCTURAL COMPONENT,AIRCRAF. Key specifications include overall_width: 55.0 MILLIMETERS NOMINAL MM, overall_height: 61.0 MILLIMETERS NOMINAL MM, overall_length: 339.4 MILLIMETERS NOMINAL MM, special_features: RAIL ATTACHMENT SYSTEM, end_item_identification: 7.62 X 51 MM SEMI-AUTOMATIC SNIPER RIFLE M110 MM, part_name_assigned_by_controlling_agency: 7.62 URX RAIL ASSY WITH TOP RAIL EXTENSION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-1432, 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
25958
NSN: 5330-00-292-1432
FSC: 5330
CAGE: 35211 — LAUSON DIVISION OF TECUMSEH PRODUCTS CO (USA)
SPECIFICATIONS
overall_width55.0 MILLIMETERS NOMINAL MM
overall_height61.0 MILLIMETERS NOMINAL MM
overall_length339.4 MILLIMETERS NOMINAL MM
special_featuresRAIL ATTACHMENT SYSTEM
end_item_identification7.62 X 51 MM SEMI-AUTOMATIC SNIPER RIFLE M110 MM
part_name_assigned_by_controlling_agency7.62 URX RAIL ASSY WITH TOP RAIL EXTENSION
NSN5330-00-292-1432
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25958 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
•
OUTSIDE CORNER RADIUS: 0.250 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 1.750 INCHES NOMINAL IN
•
MATERIAL: PAPER AND GLUE OVERALL
•
APERTURE DIAMETER: 0.938 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
BOLT HOLE QUANTITY: 2
•
SIDE RADIUS FROM GASKET CENTER: 0.719 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE CORNER RADIUS0.250 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER1.750 INCHES NOMINAL IN
MATERIALPAPER AND GLUE OVERALL
APERTURE DIAMETER0.938 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
BOLT HOLE QUANTITY2
SIDE RADIUS FROM GASKET CENTER0.719 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,NO. +3313-B MIL SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL WIDTH2.250 INCHES NOMINAL IN
HOLE DIAMETER0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
D70623Interchangeable
interchangeable cross-reference
interchangeable
10162948Interchangeable
interchangeable cross-reference
interchangeable
957E1202BInterchangeable
interchangeable cross-reference
interchangeable
25958Interchangeable
interchangeable cross-reference
interchangeable
00-0096Interchangeable
interchangeable cross-reference
interchangeable
259.58Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25958?
25958 is a WEB,STRUCTURAL COMPONENT,AIRCRAF.
What parts can replace 25958?
There are 8 known substitutes for 25958: D70623, 10162948, 957E1202B and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25958?
25958 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-292-1432. 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.
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Last verified: July 2026