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HNBR-8 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

HNBR-8: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE NITRILE, part_name_assigned_by_controlling_agency: O-RING. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-534-7905, 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
HNBR-8
NSN: 5331-01-534-7905
FSC: 5331 — O-ring
CAGE: 3HEM8 — ADVANCE AUTO AIR CONDITIONING, INC. DBA ADVANCE AUTO AIR CONDITIONING (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE NITRILE
part_name_assigned_by_controlling_agencyO-RING
NSN5331-01-534-7905
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: HNBR-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
•
MATERIAL: RUBBER BUTADIENE NITRILE
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYO-RING
END ITEM IDENTIFICATION2320-01-465-2174 MK23, 2320-01-465-2176 MK25, 2320-001-465-2180 MK27, 2320-01-465-2182 MK28, 2320-01-465-2186 MK29, 2320-01-465-2189 MK30, 2320-01-530-5693 MK31, 2320-01-465-2260 MK36, 2320-01-504-5218 MK37, PART OF ARMOR KIT
MATERIALRUBBER BUTADIENE NITRILE
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 1
2KP368Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HNBR-8?
HNBR-8 is a O-RING.
What parts can replace HNBR-8?
There is 1 known substitute for HNBR-8: 2KP368. Substitute compatibility should be verified for your specific system.
What is the NSN for HNBR-8?
HNBR-8 is cataloged in the U.S. Government catalog under NSN 5331-01-534-7905. 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.