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Technical Data Sheet

MIL-R-83485/1-258 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL-R-83485/1-258: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER, center_hole_diameter: 5.949 INCHES MINIMUM AND 6.019 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, end_item_identification: OA15720 MK26 MOD0 GMLS. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-322-8059, 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
MIL-R-83485/1-258
NSN: 5331-01-322-8059
FSC: 5331 — O-ring
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER
center_hole_diameter5.949 INCHES MINIMUM AND 6.019 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
end_item_identificationOA15720 MK26 MOD0 GMLS
NSN5331-01-322-8059
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-83485/1-258 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: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 5.949 INCHES MINIMUM AND 6.019 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER5.949 INCHES MINIMUM AND 6.019 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONOA15720 MK26 MOD0 GMLS
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 2
M83485/1-259Reference document
Same NSN cross-reference
Reference document — Secondary reference
M83485/1-258Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 MIL-R-83485/1-258?
MIL-R-83485/1-258 is a O-RING.
What parts can replace MIL-R-83485/1-258?
There are 2 known substitutes for MIL-R-83485/1-258: M83485/1-259, M83485/1-258. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-R-83485/1-258?
MIL-R-83485/1-258 is cataloged in the U.S. Government catalog under NSN 5331-01-322-8059. This indicates validated use in U.S. government and defense supply chains.
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