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Technical Data Sheet
PartsTable / COMPONENT / 358503
358503 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, hole_diameter: 0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 1.281 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN, overall_length: 1.281 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN, hardness_rating: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL, style_designator: NON-CIRCULAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-946-8344, 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
358503
NSN: 5330-00-946-8344
FSC: 5330
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
hole_diameter0.162 INCHES MINIMUM AND 0.182 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
overall_width1.281 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN
overall_length1.281 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN
hardness_rating75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
aperture_diameter1.000 INCHES MINIMUM AND 1.016 INCHES MAXIMUM IN
bolt_hole_quantity4
outside_corner_radius0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
cross-sectional_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationASTM D2000 2BC815C1E3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-946-8344
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 358503 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
•
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH: 0.959 INCHES MINIMUM AND 0.979 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
•
BOLT HOLE QUANTITY: 4
•
OUTSIDE CORNER RADIUS: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
CROSS-SECTIONAL THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BC815C1E3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH0.959 INCHES MINIMUM AND 0.979 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
BOLT HOLE QUANTITY4
OUTSIDE CORNER RADIUS0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
HARDNESS RATING75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BC815C1E3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
OVERALL WIDTH1.281 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH0.959 INCHES MINIMUM AND 0.979 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
714310-026Interchangeable
interchangeable cross-reference
interchangeable
2641321-40Interchangeable
interchangeable cross-reference
interchangeable
5330002387383Interchangeable
interchangeable cross-reference
interchangeable
MS52000-1Interchangeable
interchangeable cross-reference
interchangeable
21-642-16Interchangeable
interchangeable cross-reference
interchangeable
8526178Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 358503?
358503 is a GASKET.
What parts can replace 358503?
There are 34 known substitutes for 358503: 714310-026, 2641321-40, 5330002387383 and 31 more. Substitute compatibility should be verified for your specific system.
Is 358503 still available?
358503 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026