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Technical Data Sheet
25L5 ✓ 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: COPPER ALLOY OVERALL, outside_diameter: 4.000 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.750 INCHES NOMINAL IN, cross-sectional_thickness: 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN, cross-sectional_shape_style: RECTANGULAR METAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-360-4483, 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
25L5
NSN: 5330-00-360-4483
FSC: 5330
CAGE: 6X081 — COOPER INDUSTRIES INDUSTRIAL MACHINERY DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
outside_diameter4.000 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.750 INCHES NOMINAL IN
cross-sectional_thickness0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
cross-sectional_shape_styleRECTANGULAR METAL
material_document_and_classificationQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-360-4483
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25L5 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
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS: 0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
STYLE DESIGNATOR: CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
APERTURE DIAMETER: 3.750 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY OVERALL
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR METAL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.020 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
APERTURE DIAMETER3.750 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR METAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
E708Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-13531Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-13531Interchangeable
interchangeable cross-reference
interchangeable
4218Interchangeable
interchangeable cross-reference
interchangeable
504220Interchangeable
interchangeable cross-reference
interchangeable
G4A00104CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25L5?
25L5 is a GASKET.
What parts can replace 25L5?
There are 15 known substitutes for 25L5: E708, MIL-DTL-13531, MIL-H-13531 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 25L5?
25L5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-360-4483. This indicates validated use in U.S. government and defense supply chains.
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