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Technical Data Sheet
PartsTable / COMPONENT / 2640-384X1PC22
2640-384X1PC22 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER, hole_diameter: 0.219 INCHES NOMINAL IN, overall_height: 0.594 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, first_counterbore_depth: 0.281 INCHES NOMINAL IN, material_hardness_rating: 75.0 DUROMETER MINIMUM AND 85.0 DUROMETER MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-105-8306, 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
2640-384X1PC22
NSN: 5340-00-105-8306
FSC: 5340
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialRUBBER
hole_diameter0.219 INCHES NOMINAL IN
overall_height0.594 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.281 INCHES NOMINAL IN
material_hardness_rating75.0 DUROMETER MINIMUM AND 85.0 DUROMETER MAXIMUM
first_counterbore_diameter0.375 INCHES NOMINAL IN
outside/top_flange_diameter0.812 INCHES NOMINAL IN
material_document_and_classificationMIL-R-6855, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5340-00-105-8306
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2640-384X1PC22 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.812 INCHES NOMINAL IN
•
MATERIAL HARDNESS RATING: 75.0 DUROMETER MINIMUM AND 85.0 DUROMETER MAXIMUM
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
FIRST COUNTERBORE DEPTH: 0.281 INCHES NOMINAL IN
•
FIRST COUNTERBORE DIAMETER: 0.375 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER
OUTSIDE/TOP FLANGE DIAMETER0.812 INCHES NOMINAL IN
MATERIAL HARDNESS RATING75.0 DUROMETER MINIMUM AND 85.0 DUROMETER MAXIMUM
STYLE DESIGNATORFLAT TOP COUNTERBORED
FIRST COUNTERBORE DEPTH0.281 INCHES NOMINAL IN
FIRST COUNTERBORE DIAMETER0.375 INCHES NOMINAL IN
HOLE DIAMETER0.219 INCHES NOMINAL IN
OVERALL HEIGHT0.594 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855, CLASS 2 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
57312-0001-00Interchangeable
interchangeable cross-reference
interchangeable
1-246-425-00Interchangeable
interchangeable cross-reference
interchangeable
4704-147868Interchangeable
interchangeable cross-reference
interchangeable
1340Interchangeable
interchangeable cross-reference
interchangeable
44101Interchangeable
interchangeable cross-reference
interchangeable
12231Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2640-384X1PC22?
2640-384X1PC22 is a BUMPER.
What parts can replace 2640-384X1PC22?
There are 16 known substitutes for 2640-384X1PC22: 57312-0001-00, 1-246-425-00, 4704-147868 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-384X1PC22?
2640-384X1PC22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-105-8306. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026