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9729K74 — 9729K74

✓ Government record, cited
MCMASTER-CARR SUPPLY CO · ORING SEAL
PRODUCT OVERVIEW

9729K74: 9729K74.

The 9729K74 is a MCMASTER-CARR SUPPLY CO industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-455-1671, 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
9729K74
NSN: 5340-01-455-1671
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
Part Number9729K74
ManufacturerMCMASTER-CARR SUPPLY CO
NSN5340-01-455-1671
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9729K74 MFR: MCMASTER-CARR SUPPLY CO ⚠ 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
•
STYLE DESIGNATOR: CYLINDRICAL
•
INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
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COLOR: BLACK OVERALL
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MATERIAL: PLASTIC VINYL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCYLINDRICAL
INSIDE DIAMETER0.625 INCHES NOMINAL IN
COLORBLACK OVERALL
SPECIAL FEATURESONE CLOSED END; ROUND VINYL GRIP; DIMPLED SURFACE; 4-9/16 INCH FIT IN
END ITEM IDENTIFICATIONNSN 3990-01-442-1939 BRIDGE ADAPTER PALLET; HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK)
MATERIALPLASTIC VINYL OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9729K74?
9729K74 is a 9729K74 manufactured by MCMASTER-CARR SUPPLY CO.
What is the NSN for 9729K74?
9729K74 is cataloged in the U.S. Government catalog under NSN 5340-01-455-1671. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.