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Technical Data Sheet
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1343840 — CLAMP,BLOCK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1343840: CLAMP,BLOCK.

The CLAMP,BLOCK is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5340-01-158-0260, 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
1343840
NSN: 5340-01-158-0260
FSC: 5340 — Hardware, Commercial
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
Part Number1343840
NSN5340-01-158-0260
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1343840 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
SUBSTITUTES & CROSS-REFERENCES 2
3254/254-PPReference document
Same NSN cross-reference
Reference document — Secondary reference
9325C11-1458-04Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1343840?
1343840 is a CLAMP,BLOCK.
What parts can replace 1343840?
There are 2 known substitutes for 1343840: 3254/254-PP, 9325C11-1458-04. Substitute compatibility should be verified for your specific system.
What is the NSN for 1343840?
1343840 is cataloged in the U.S. Government catalog under NSN 5340-01-158-0260. This indicates validated use in U.S. government and defense supply chains.
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