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858-55001 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

858-55001: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include center_hole_diameter: 1.330 INCHES NOMINAL IN, cross-sectional_height: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-183-0875, 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
858-55001
NSN: 5331-00-183-0875
FSC: 5331 — O-ring
CAGE: K3861 — THALES SECURITY SYSTEMS UK LIMITED (GBR)
SPECIFICATIONS
center_hole_diameter1.330 INCHES NOMINAL IN
cross-sectional_height0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
NSN5331-00-183-0875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 858-55001 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: 0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.330 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.089 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.330 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
910-122Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9377735Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9379657Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 858-55001?
858-55001 is a O-RING.
What parts can replace 858-55001?
There are 3 known substitutes for 858-55001: 910-122, 9377735, 9379657. Substitute compatibility should be verified for your specific system.
What is the NSN for 858-55001?
858-55001 is cataloged in the U.S. Government catalog under NSN 5331-00-183-0875. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.