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Technical Data Sheet
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1750550 — 1750550

✓ Government record, cited
HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING · ORING SEAL
PRODUCT OVERVIEW

1750550: 1750550.

The 1750550 is a HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-454-4158, 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
1750550
NSN: 5330-01-454-4158
FSC: 5330 — Packing and Gasket Materials
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
Part Number1750550
ManufacturerHUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING
NSN5330-01-454-4158
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1750550 MFR: HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING ⚠ 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
2157-139 ASSY 91Reference document
Same NSN cross-reference
Reference document — Secondary reference
122-5589566 ASSY 91Reference 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 1750550?
1750550 is a 1750550 manufactured by HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING.
What parts can replace 1750550?
There are 2 known substitutes for 1750550: 2157-139 ASSY 91, 122-5589566 ASSY 91. Substitute compatibility should be verified for your specific system.
What is the NSN for 1750550?
1750550 is cataloged in the U.S. Government catalog under NSN 5330-01-454-4158. This indicates validated use in U.S. government and defense supply chains.
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