PartsTable
Technical Data Sheet

M83485/1-238 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

M83485/1-238: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, center_hole_diameter: 3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN, end_item_identification: 1520-01-599-2203. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-485-6442, 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
M83485/1-238
NSN: 5331-01-485-6442
NIINs: 014856442, 016182293
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
center_hole_diameter3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
end_item_identification1520-01-599-2203
NSN5331-01-485-6442
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M83485/1-238 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
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-83451/1 MIL SPEC SINGLE MATERIAL RESPONSE
•
CENTER HOLE DIAMETER: 3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-83451/1 MIL SPEC SINGLE MATERIAL RESPONSE
CENTER HOLE DIAMETER3.460 INCHES MINIMUM AND 3.508 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
SUBSTITUTES & CROSS-REFERENCES 1
ST1946-238Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M83485/1-238?
M83485/1-238 is a O-RING.
What parts can replace M83485/1-238?
There is 1 known substitute for M83485/1-238: ST1946-238. Substitute compatibility should be verified for your specific system.
What is the NSN for M83485/1-238?
M83485/1-238 is cataloged in the U.S. Government catalog under NSN 5331-01-485-6442. 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.