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N304-7-77 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

N304-7-77: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 10.445 INCHES MINIMUM AND 10.505 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-186-2751, 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
N304-7-77
NSN: 5331-00-186-2751
FSC: 5331 — O-ring
CAGE: 02697 — PARKER-HANNIFIN CORP DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter10.445 INCHES MINIMUM AND 10.505 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN5331-00-186-2751
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N304-7-77 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: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 10.445 INCHES MINIMUM AND 10.505 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
CENTER HOLE DIAMETER10.445 INCHES MINIMUM AND 10.505 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 7
1815-57Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN6227-77Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AN6227B-77Reference document
Same NSN cross-reference
Reference document — Secondary reference
N304-7-B77Reference document
Same NSN cross-reference
Reference document — Secondary reference
5331PL0929293Reference document
Same NSN cross-reference
Reference document — Informative reference only
N0304 2-450Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N304-7-77?
N304-7-77 is a O-RING.
What parts can replace N304-7-77?
There are 7 known substitutes for N304-7-77: 1815-57, AN6227-77, AN6227B-77 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N304-7-77?
N304-7-77 is cataloged in the U.S. Government catalog under NSN 5331-00-186-2751. This indicates validated use in U.S. government and defense supply chains.
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