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Technical Data Sheet
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H71721C — H71721C

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H71721C: H71721C.

The H71721C is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-075-5734, 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
H71721C
NSN: 5340-01-075-5734
FSC: 5340 — Hardware, Commercial
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
Part NumberH71721C
NSN5340-01-075-5734
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H71721C 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
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
71721CReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H71721C?
H71721C is a H71721C.
What parts can replace H71721C?
There is 1 known substitute for H71721C: 71721C. Substitute compatibility should be verified for your specific system.
What is the NSN for H71721C?
H71721C is cataloged in the U.S. Government catalog under NSN 5340-01-075-5734. This indicates validated use in U.S. government and defense supply chains.
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