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Technical Data Sheet
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GU889 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

GU889: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include end_item_identification: 3040-00-722-3536, part_name_assigned_by_controlling_agency: SEAT, SPRING. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-504-7157, 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
GU889
NSN: 5340-01-504-7157
FSC: 5340 — Hardware, Commercial
CAGE: 01843 — AMBAC INTERNATIONAL CORPORATION DIV AMBAC INTERNATIONAL (USA)
SPECIFICATIONS
end_item_identification3040-00-722-3536
part_name_assigned_by_controlling_agencySEAT, SPRING
NSN5340-01-504-7157
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: GU889 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 AGENCYSEAT, SPRING
END ITEM IDENTIFICATION3040-00-722-3536
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
5340015047157Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GU889?
GU889 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace GU889?
There is 1 known substitute for GU889: 5340015047157. Substitute compatibility should be verified for your specific system.
What is the NSN for GU889?
GU889 is cataloged in the U.S. Government catalog under NSN 5340-01-504-7157. This indicates validated use in U.S. government and defense supply chains.
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