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Technical Data Sheet
PartsTable / COMPONENT / 721-8541924-29
721-8541924-29 ✓ 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 SEAL,PLAIN is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-684-7256, 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
721-8541924-29
NSN: 5330-01-684-7256
FSC: 5330
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number721-8541924-29
NSN5330-01-684-7256
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 721-8541924-29 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
721-8541924Interchangeable
interchangeable cross-reference
interchangeable
721-8541924-5Interchangeable
interchangeable cross-reference
interchangeable
60-23-9968AInterchangeable
interchangeable cross-reference
interchangeable
218087134Interchangeable
interchangeable cross-reference
interchangeable
R861-1506-57Interchangeable
interchangeable cross-reference
interchangeable
218087008Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 721-8541924-29?
721-8541924-29 is a SEAL,PLAIN.
What parts can replace 721-8541924-29?
There are 23 known substitutes for 721-8541924-29: 721-8541924, 721-8541924-5, 60-23-9968A and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 721-8541924-29?
721-8541924-29 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-684-7256. 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