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N8640-6ALT2PC42 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

N8640-6ALT2PC42: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: ASBESTOS OVERALL, hole_diameter: 0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 6.750 INCHES NOMINAL IN, aperture_length: 9.938 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-032-4958, 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
N8640-6ALT2PC42
NSN: 5330-00-032-4958
FSC: 5330 — Packing and Gasket Materials
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialASBESTOS OVERALL
hole_diameter0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width6.750 INCHES NOMINAL IN
aperture_length9.938 INCHES NOMINAL IN
NSN5330-00-032-4958
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N8640-6ALT2PC42 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
•
APERTURE LENGTH: 9.938 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS OVERALL
•
HOLE DIAMETER: 0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
OVERALL WIDTH6.750 INCHES NOMINAL IN
APERTURE LENGTH9.938 INCHES NOMINAL IN
MATERIALASBESTOS OVERALL
HOLE DIAMETER0.469 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES 3
52131-5901-998673ALT2PC42Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
52MAD1282N18PC113-1042Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
571-3801-1444715REVAPC113-1042Same 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 N8640-6ALT2PC42?
N8640-6ALT2PC42 is a GASKET.
What parts can replace N8640-6ALT2PC42?
There are 3 known substitutes for N8640-6ALT2PC42: 52131-5901-998673ALT2PC42, 52MAD1282N18PC113-1042, 571-3801-1444715REVAPC113-1042. Substitute compatibility should be verified for your specific system.
What is the NSN for N8640-6ALT2PC42?
N8640-6ALT2PC42 is cataloged in the U.S. Government catalog under NSN 5330-00-032-4958. 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.