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2643/CAT183(.500IN)DP-500 BLACK — Technical Data Sheet

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— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include special_features: READY FOR BACK TRANSFER; J6R; 2-24-2008.. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5340-01-275-8044, 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
2643/CAT183(.500IN)DP-500 BLACK
NSN: 5340-01-275-8044
FSC: 5340
CAGE: 28520 — HEYCO INC DBA HEYCO PRODUCTS (USA)
SPECIFICATIONS
special_featuresREADY FOR BACK TRANSFER; J6R; 2-24-2008.
NSN5340-01-275-8044
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2643/CAT183(.500IN)DP-500 BLACK 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESREADY FOR BACK TRANSFER; J6R; 2-24-2008.
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2643InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
2-541InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6674InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
852EInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
HC-10InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PA7966InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2643/CAT183(.500IN)DP-500 BLACK?
2643/CAT183(.500IN)DP-500 BLACK is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 2643/CAT183(.500IN)DP-500 BLACK?
There are 18 known substitutes for 2643/CAT183(.500IN)DP-500 BLACK: 2643, 2-541, 6674 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2643/CAT183(.500IN)DP-500 BLACK?
2643/CAT183(.500IN)DP-500 BLACK is cataloged in the Federal Logistics Information System under NSN 5340-01-275-8044. 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.
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Last verified: October 2026