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541802 PIECE 73 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

541802 PIECE 73: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include part_name_assigned_by_controlling_agency: SPRING SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-140-0386, 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
541802 PIECE 73
NSN: 5340-01-140-0386
FSC: 5340 — Hardware, Commercial
CAGE: 86035 — CALGON CORP (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencySPRING SEAT
NSN5340-01-140-0386
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 541802 PIECE 73 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYSPRING SEAT
SUBSTITUTES & CROSS-REFERENCES 3
18864Reference document
Same NSN cross-reference
Reference document — Secondary reference
R138864Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
138864Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 541802 PIECE 73?
541802 PIECE 73 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 541802 PIECE 73?
There are 3 known substitutes for 541802 PIECE 73: 18864, R138864, 138864. Substitute compatibility should be verified for your specific system.
What is the NSN for 541802 PIECE 73?
541802 PIECE 73 is cataloged in the U.S. Government catalog under NSN 5340-01-140-0386. This indicates validated use in U.S. government and defense supply chains.
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