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US71857 H71857-1 — PLATE,RETAINING,SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

US71857 H71857-1: PLATE,RETAINING,SEAL.

The PLATE,RETAINING,SEAL is a the manufacturer industrial component. Key specifications include end_item_identification: SEAL,STERN TUBE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-324-5449, 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
US71857 H71857-1
NSN: 5340-01-324-5449
FSC: 5340 — Hardware, Commercial
CAGE: 0SYN4 — WARTSILA LIPS INC (USA)
SPECIFICATIONS
end_item_identificationSEAL,STERN TUBE
NSN5340-01-324-5449
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: US71857 H71857-1 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
END ITEM IDENTIFICATIONSEAL,STERN TUBE
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 2
US-71435 ITEM 1Reference document
Same NSN cross-reference
Reference document — Secondary reference
H47777Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 US71857 H71857-1?
US71857 H71857-1 is a PLATE,RETAINING,SEAL.
What parts can replace US71857 H71857-1?
There are 2 known substitutes for US71857 H71857-1: US-71435 ITEM 1, H47777. Substitute compatibility should be verified for your specific system.
What is the NSN for US71857 H71857-1?
US71857 H71857-1 is cataloged in the U.S. Government catalog under NSN 5340-01-324-5449. 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.