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Technical Data Sheet
PartsTable / COMPONENT / 37953PCBM31
37953PCBM31 ✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, hole_diameter: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 6.500 INCHES NOMINAL IN, aperture_width: 3.500 INCHES NOMINAL IN, overall_length: 8.125 INCHES NOMINAL IN, aperture_length: 5.125 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-254-9944, 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
37953PCBM31
NSN: 5330-00-254-9944
FSC: 5330
CAGE: 08219 — STONE SAFETY CORP (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
hole_diameter0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width6.500 INCHES NOMINAL IN
aperture_width3.500 INCHES NOMINAL IN
overall_length8.125 INCHES NOMINAL IN
aperture_length5.125 INCHES NOMINAL IN
hardness_rating50.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
bolt_hole_quantity4
cross-sectional_thickness0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-254-9944
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37953PCBM31 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
•
APERTURE LENGTH: 5.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NON-CIRCULAR
•
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH: 0.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.250 INCHES NOMINAL IN
•
APERTURE WIDTH: 3.500 INCHES NOMINAL IN
•
HARDNESS RATING: 50.0 SHORE DUROMETER A MAXIMUM OVERALL
•
BOLT HOLE QUANTITY: 4
•
HOLE DIAMETER: 0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE LENGTH5.125 INCHES NOMINAL IN
STYLE DESIGNATORNON-CIRCULAR
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH0.500 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.250 INCHES NOMINAL IN
APERTURE WIDTH3.500 INCHES NOMINAL IN
HARDNESS RATING50.0 SHORE DUROMETER A MAXIMUM OVERALL
BOLT HOLE QUANTITY4
HOLE DIAMETER0.344 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
68049Interchangeable
interchangeable cross-reference
interchangeable
436MRL-25Interchangeable
interchangeable cross-reference
interchangeable
1631MInterchangeable
interchangeable cross-reference
interchangeable
30553Interchangeable
interchangeable cross-reference
interchangeable
5196751Interchangeable
interchangeable cross-reference
interchangeable
D00492001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37953PCBM31?
37953PCBM31 is a GASKET.
What parts can replace 37953PCBM31?
There are 18 known substitutes for 37953PCBM31: 68049, 436MRL-25, 1631M and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 37953PCBM31?
37953PCBM31 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-254-9944. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026