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Technical Data Sheet
PartsTable / COMPONENT / 876721-00
876721-00 ✓ 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 BUTTON,PLUG is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, head_height: 0.078 INCHES NOMINAL IN, overall_height: 0.266 INCHES NOMINAL IN, style_designator: STANDARD, head_outside_diameter: 0.656 INCHES NOMINAL IN, prong_outside_diameter: 0.594 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-680-4761, 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
876721-00
NSN: 5340-00-680-4761
FSC: 5340
CAGE: 32345 — DEFENSE REDUCTION AGENCY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
head_height0.078 INCHES NOMINAL IN
overall_height0.266 INCHES NOMINAL IN
prong_quantity8
style_designatorSTANDARD
head_outside_diameter0.656 INCHES NOMINAL IN
prong_outside_diameter0.594 INCHES NOMINAL IN
hole_accommodation_diameter0.500 INCHES NOMINAL IN
material_accommodated_thickness0.062 INCHES NOMINAL IN
NSN5340-00-680-4761
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 876721-00 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
•
HEAD OUTSIDE DIAMETER: 0.656 INCHES NOMINAL IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.062 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
HEAD HEIGHT: 0.078 INCHES NOMINAL IN
•
HOLE ACCOMMODATION DIAMETER: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STANDARD
•
PRONG OUTSIDE DIAMETER: 0.594 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD OUTSIDE DIAMETER0.656 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.062 INCHES NOMINAL IN
OVERALL HEIGHT0.266 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
HEAD HEIGHT0.078 INCHES NOMINAL IN
HOLE ACCOMMODATION DIAMETER0.500 INCHES NOMINAL IN
STYLE DESIGNATORSTANDARD
PRONG OUTSIDE DIAMETER0.594 INCHES NOMINAL IN
PRONG QUANTITY8
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
0978REVBPC5Upgraded Successor
successor cross-reference
successor
BS48152Upgraded Successor
successor cross-reference
successor
215-502Upgraded Successor
successor cross-reference
successor
0N009457Interchangeable
Same NIIN cross-reference
interchangeable
84SNPBInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 876721-00?
876721-00 is a BUTTON,PLUG.
What parts can replace 876721-00?
There are 5 known substitutes for 876721-00: 0978REVBPC5, BS48152, 215-502 and 2 more. Substitute compatibility should be verified for your specific system.
Is 876721-00 still available?
876721-00 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026