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55-2958 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

55-2958: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include special_features: 0.312 IN DIA IN, end_item_identification: USED ON VARIOUS THERMO KING TRAILER MECHANICAL REFRIGERATION UNITS. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-901-1204, 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
55-2958
NSN: 5330-00-901-1204
NIINs: 009011204, 015440722
FSC: 5330 — Packing and Gasket Materials
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
special_features0.312 IN DIA IN
end_item_identificationUSED ON VARIOUS THERMO KING TRAILER MECHANICAL REFRIGERATION UNITS
NSN5330-00-901-1204
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 55-2958 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
KEY FEATURES
•
CROSS-SECTIONAL THICKNESS: 0.062 INCHES NOMINAL IN
•
END RADIUS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE: 0.125 INCHES NOMINAL IN
•
BOLT HOLE QUANTITY: 2
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
END RADIUS0.125 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
OVERALL LENGTH3.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OVERALL WIDTH1.125 INCHES NOMINAL IN
BOLT HOLE CENTERLINE TO NEAREST EDGE DISTANCE0.125 INCHES NOMINAL IN
BOLT HOLE QUANTITY2
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH2.625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.312 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
1144PC168Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55-2958?
55-2958 is a GASKET.
What parts can replace 55-2958?
There is 1 known substitute for 55-2958: 1144PC168. Substitute compatibility should be verified for your specific system.
What is the NSN for 55-2958?
55-2958 is cataloged in the U.S. Government catalog under NSN 5330-00-901-1204. 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.