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9HE953 — BACK-UP RING,PREFORMED PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9HE953: BACK-UP RING,PREFORMED PACKING.

The BACK-UP RING,PREFORMED PACKING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5330-00-005-0572, 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
9HE953
NSN: 5330-00-005-0572
FSC: 5330 — Packing and Gasket Materials
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
Part Number9HE953
NSN5330-00-005-0572
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9HE953 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
N8-45.01X51.01X1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
8-224 N300-90Reference document
Same NSN cross-reference
Reference document — Secondary reference
8-224N300-9Reference document
Same NSN cross-reference
Reference document — Secondary reference
5623115Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
D850310200Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
4460860-0224Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9HE953?
9HE953 is a BACK-UP RING,PREFORMED PACKING.
What parts can replace 9HE953?
There are 8 known substitutes for 9HE953: N8-45.01X51.01X1, 8-224 N300-90, 8-224N300-9 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9HE953?
9HE953 is cataloged in the U.S. Government catalog under NSN 5330-00-005-0572. 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.