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Technical Data Sheet
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501-1791 — NRP,VALVE,BUTTERFLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

501-1791: NRP,VALVE,BUTTERFLY.

The NRP,VALVE,BUTTERFLY is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-605-7308, 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
501-1791
NSN: 5330-01-605-7308
NIINs: 016057308, 016065372
FSC: 5330 — Packing and Gasket Materials
CAGE: 53154 — PORTLAND VALVE LLC (USA)
SPECIFICATIONS
Part Number501-1791
NSN5330-01-605-7308
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 501-1791 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 1
501-1791 PC. NO. 11Same 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 501-1791?
501-1791 is a NRP,VALVE,BUTTERFLY.
What parts can replace 501-1791?
There is 1 known substitute for 501-1791: 501-1791 PC. NO. 11. Substitute compatibility should be verified for your specific system.
What is the NSN for 501-1791?
501-1791 is cataloged in the U.S. Government catalog under NSN 5330-01-605-7308. This indicates validated use in U.S. government and defense supply chains.
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