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RT253-65-163 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

RT253-65-163: O-RING.

The O-RING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5331-00-469-3556, 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
RT253-65-163
NSN: 5331-00-469-3556
FSC: 5331 — O-ring
CAGE: 77969 — RUBBERCRAFT CORPORATION OF CALIFORNIA, LTD. DBA RUBBERCRAFT CORP (USA)
SPECIFICATIONS
Part NumberRT253-65-163
NSN5331-00-469-3556
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RT253-65-163 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 8
PRP568-163-457-60Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
C-69-163Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2-163 N180-70Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7866-163Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SAE-AS29513Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS29513-163Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RT253-65-163?
RT253-65-163 is a O-RING.
What parts can replace RT253-65-163?
There are 8 known substitutes for RT253-65-163: PRP568-163-457-60, C-69-163, 2-163 N180-70 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RT253-65-163?
RT253-65-163 is cataloged in the U.S. Government catalog under NSN 5331-00-469-3556. 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.