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Technical Data Sheet
PartsTable / O-RING / 258393-8
258393-8 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.550 INCHES MINIMUM AND 1.586 INCHES MAXIMUM IN, center_hole_diameter: 1.350 INCHES MINIMUM AND 1.374 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-167-5114, 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
258393-8
NSN: 5331-00-167-5114
FSC: 5331 — O-RING
CAGE: D9209 — RICKMEIER GMBH (DEU)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
hardness_rating75.0 SHORE DUROMETER A NOMINAL
outside_diameter1.550 INCHES MINIMUM AND 1.586 INCHES MAXIMUM IN
center_hole_diameter1.350 INCHES MINIMUM AND 1.374 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
end_item_identificationARMORED MULTI-PURPOSE VEHICLE (AMPV); MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
NSN5331-00-167-5114
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 258393-8 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
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
HARDNESS RATING: 75.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
•
CENTER HOLE DIAMETER: 1.350 INCHES MINIMUM AND 1.374 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.550 INCHES MINIMUM AND 1.586 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
ELONGATION PERCENTAGE125 MAXIMUM
HARDNESS RATING75.0 SHORE DUROMETER A NOMINAL
MATERIALRUBBER FLUOROCARBON CLASS FPM
END ITEM IDENTIFICATIONARMORED MULTI-PURPOSE VEHICLE (AMPV); MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
CENTER HOLE DIAMETER1.350 INCHES MINIMUM AND 1.374 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.550 INCHES MINIMUM AND 1.586 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
MS28775-218Interchangeable
interchangeable cross-reference
interchangeable
10250510-4Interchangeable
interchangeable cross-reference
interchangeable
AS3209-126Interchangeable
interchangeable cross-reference
interchangeable
5331PL0140399Interchangeable
interchangeable cross-reference
interchangeable
ST3001-126Interchangeable
interchangeable cross-reference
interchangeable
2-126 V747-75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 258393-8?
258393-8 is a O-RING.
What parts can replace 258393-8?
There are 17 known substitutes for 258393-8: MS28775-218, 10250510-4, AS3209-126 and 14 more. Substitute compatibility should be verified for your specific system.
Is 258393-8 still available?
258393-8 is currently cancelled.
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Last verified: July 2026