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E-171-820-421 — PACKING MATERIAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

E-171-820-421: PACKING MATERIAL.

The PACKING MATERIAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-01-267-1728, 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
E-171-820-421
NSN: 5330-01-267-1728
FSC: 5330 — Packing and Gasket Materials
CAGE: 11440 — GE STEAM POWER INC DBA GE STEAM POWER, INC DIV GENERAL ELECTRIC (USA)
SPECIFICATIONS
Part NumberE-171-820-421
NSN5330-01-267-1728
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E-171-820-421 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 2
AB32Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
E-171-820-423Reference 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 E-171-820-421?
E-171-820-421 is a PACKING MATERIAL.
What parts can replace E-171-820-421?
There are 2 known substitutes for E-171-820-421: AB32, E-171-820-423. Substitute compatibility should be verified for your specific system.
What is the NSN for E-171-820-421?
E-171-820-421 is cataloged in the U.S. Government catalog under NSN 5330-01-267-1728. This indicates validated use in U.S. government and defense supply chains.
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