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Technical Data Sheet
PartsTable / COMPONENT / 7/8-6BK
7/8-6BK ✓ 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 7/8-6BK is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-0757, 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
7/8-6BK
NSN: 5340-00-290-0757
FSC: 5340
CAGE: 85480 — BRADY UNITED STATES (USA)
SPECIFICATIONS
Part Number7/8-6BK
NSN5340-00-290-0757
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7/8-6BK 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
•
LOOP INSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SINGLE LOOP
•
MATERIAL: PLASTIC POLYAMIDE NYLON BAND
•
DIAMETER: 0.203 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.060 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE: 0.845 INCHES NOMINAL IN
•
TONGUE HOLE TYPE: ROUND, UNTHREADED
TECHNICAL CHARACTERISTICS (FLIS)
LOOP INSIDE DIAMETER0.875 INCHES NOMINAL IN
STYLE DESIGNATORSINGLE LOOP
MATERIALPLASTIC POLYAMIDE NYLON BAND
DIAMETER0.203 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.060 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN LOOP AND MOUNTING HOLE0.845 INCHES NOMINAL IN
TONGUE HOLE TYPEROUND, UNTHREADED
DISTANCE FROM LOOP CENTER TO TONGUE END1.048 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
782Upgraded Successor
successor cross-reference
successor
9416649Interchangeable
interchangeable cross-reference
interchangeable
5553209Interchangeable
interchangeable cross-reference
interchangeable
FFB187/01-702Interchangeable
interchangeable cross-reference
interchangeable
52-C-49 1/2Interchangeable
interchangeable cross-reference
interchangeable
846-50Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7/8-6BK?
7/8-6BK is a 7/8-6BK.
What parts can replace 7/8-6BK?
There are 27 known substitutes for 7/8-6BK: 782, 9416649, 5553209 and 24 more. Substitute compatibility should be verified for your specific system.
Is 7/8-6BK still available?
7/8-6BK 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