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OR4287 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

OR4287: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE NITRILE, temp_rating: -25.0 CELSIUS AND 125.0 CELSIUS DEGC, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, special_features: MEDIUM STABILITY: RESISTANT AGAINST MINERAL OILS AND FATS, WATER AND GLYCOLS, part_name_assigned_by_controlling_agency: PRECISION O-RING HITEC. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-649-2861, 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
OR4287
NSN: 5331-01-649-2861
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE NITRILE
temp_rating-25.0 CELSIUS AND 125.0 CELSIUS DEGC
hardness_rating70.0 SHORE DUROMETER A NOMINAL
special_featuresMEDIUM STABILITY: RESISTANT AGAINST MINERAL OILS AND FATS, WATER AND GLYCOLS
part_name_assigned_by_controlling_agencyPRECISION O-RING HITEC
NSN5331-01-649-2861
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: OR4287 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: -25.0 CELSIUS AND 125.0 CELSIUS DEGC
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER BUTADIENE NITRILE
TECHNICAL CHARACTERISTICS
TEMP RATING-25.0 CELSIUS AND 125.0 CELSIUS DEGC
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
SPECIAL FEATURESMEDIUM STABILITY: RESISTANT AGAINST MINERAL OILS AND FATS, WATER AND GLYCOLS
PART NAME ASSIGNED BY CONTROLLING AGENCYPRECISION O-RING HITEC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is OR4287?
OR4287 is a O-RING.
What is the NSN for OR4287?
OR4287 is cataloged in the U.S. Government catalog under NSN 5331-01-649-2861. 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.