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Technical Data Sheet
PartsTable / O-RING / 525238
525238 ✓ 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 CAP,FILLER OPENING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, overall_height: 1.375 INCHES NOMINAL IN, outside_diameter: 3.310 INCHES NOMINAL IN, accommodation_type: HANDLE END GRIPPING, maximum_working_pressure: 12.000 POUNDS PER SQUARE INCH (PSI) LBS, system_for_which_designed: PRESSURIZED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-021-3637, 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
525238
NSN: 5331-00-021-3637
FSC: 5331 — O-RING
CAGE: 11247 — LODESTONE CORP DIV OF FEDDERS CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
cam_quantity3
overall_height1.375 INCHES NOMINAL IN
outside_diameter3.310 INCHES NOMINAL IN
accommodation_typeHANDLE END GRIPPING
maximum_working_pressure12.000 POUNDS PER SQUARE INCH (PSI) LBS
system_for_which_designedPRESSURIZED
NSN5331-00-021-3637
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 525238 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
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 5.452 INCHES MINIMUM AND 5.522 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 5.693 INCHES NOMINAL IN
•
TEMP RATING: -35.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER CHLOROPRENE CLASS CR
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER5.452 INCHES MINIMUM AND 5.522 INCHES MAXIMUM IN
OUTSIDE DIAMETER5.693 INCHES NOMINAL IN
TEMP RATING-35.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
149-2337Interchangeable
interchangeable cross-reference
interchangeable
2-149C147-70Interchangeable
interchangeable cross-reference
interchangeable
MY1110Interchangeable
interchangeable cross-reference
interchangeable
525238Interchangeable
interchangeable cross-reference
interchangeable
334819Interchangeable
interchangeable cross-reference
interchangeable
AS568-161Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 525238?
525238 is a CAP,FILLER OPENING.
What parts can replace 525238?
There are 13 known substitutes for 525238: 149-2337, 2-149C147-70, MY1110 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 525238?
525238 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-021-3637. 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