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08000543 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

08000543: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER NATURAL, temp_rating: -30.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF, outside_diameter: 0.379 INCHES NOMINAL IN, center_hole_diameter: 0.239 INCHES NOMINAL IN, cross-sectional_height: 0.070 INCHES NOMINAL IN, end_item_identification: OPERATOR CONTROL CENTER. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-642-6902, 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
08000543
NSN: 5331-01-642-6902
FSC: 5331 — O-ring
CAGE: 98523 — JERED LLC (USA)
SPECIFICATIONS
materialRUBBER NATURAL
temp_rating-30.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF
outside_diameter0.379 INCHES NOMINAL IN
center_hole_diameter0.239 INCHES NOMINAL IN
cross-sectional_height0.070 INCHES NOMINAL IN
end_item_identificationOPERATOR CONTROL CENTER
part_name_assigned_by_controlling_agencyO-RING, SQUARE, 3/8
NSN5331-01-642-6902
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 08000543 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
•
TEMP RATING: -30.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.070 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.379 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.239 INCHES NOMINAL IN
•
MATERIAL: RUBBER NATURAL
TECHNICAL CHARACTERISTICS
TEMP RATING-30.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.070 INCHES NOMINAL IN
OUTSIDE DIAMETER0.379 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.239 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYO-RING, SQUARE, 3/8
END ITEM IDENTIFICATIONOPERATOR CONTROL CENTER
MATERIALRUBBER NATURAL
OTHER ITEMS IN FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971 5331-00-001-1979 5331-00-001-3904 5331-00-001-3905 5331-00-001-3906 5331-00-001-3908 5331-00-001-3923 5331-00-001-3924
SUBSTITUTES & CROSS-REFERENCES 2
4061T115Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
08000543 FN 21Reference 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 08000543?
08000543 is a O-RING.
What parts can replace 08000543?
There are 2 known substitutes for 08000543: 4061T115, 08000543 FN 21. Substitute compatibility should be verified for your specific system.
What is the NSN for 08000543?
08000543 is cataloged in the U.S. Government catalog under NSN 5331-01-642-6902. 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.