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255574PC20 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

255574PC20: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-01-197-1393, 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
255574PC20
NSN: 5331-01-197-1393
FSC: 5331 — O-ring
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
Part Number255574PC20
NSN5331-01-197-1393
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 255574PC20 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 9
ARP568-339MILG23652TY2Reference document
Same NSN cross-reference
Reference document — Secondary reference
845-2180979 PIECE 39Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
255573PC20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS568-339MIL-G- 23652TYPE2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS3581-339Reference document
Same NSN cross-reference
Reference document — Secondary reference
2-339V709-90Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 255574PC20?
255574PC20 is a O-RING.
What parts can replace 255574PC20?
There are 9 known substitutes for 255574PC20: ARP568-339MILG23652TY2, 845-2180979 PIECE 39, 255573PC20 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 255574PC20?
255574PC20 is cataloged in the U.S. Government catalog under NSN 5331-01-197-1393. 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.