PartsTable
Technical Data Sheet
Download PDF

76643-85X1PC55 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

76643-85X1PC55: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, hardness_rating: 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL, material_document_and_classification: AMS 3240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-540-3400, 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
76643-85X1PC55
NSN: 5330-00-540-3400
FSC: 5330 — Packing and Gasket Materials
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hardness_rating35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
material_document_and_classificationAMS 3240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-540-3400
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 76643-85X1PC55 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
•
HARDNESS RATING: 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3240 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
2725-022X03PC1Reference document
Same NSN cross-reference
Reference document — Secondary reference
3462-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 76643-85X1PC55?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 76643-85X1PC55?
76643-85X1PC55 is a GASKET.
What parts can replace 76643-85X1PC55?
There are 2 known substitutes for 76643-85X1PC55: 2725-022X03PC1, 3462-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 76643-85X1PC55?
76643-85X1PC55 is cataloged in the U.S. Government catalog under NSN 5330-00-540-3400. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 76643-85X1PC55

✓ 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.