PartsTable
Technical Data Sheet
MIL-PRF-25732 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, outside_diameter: 1.485 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN, center_hole_diameter: 1.358 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM 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 5331-00-406-1073, 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
MIL-PRF-25732
NSN: 5331-00-406-1073
FSC: 5331 — O-RING
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter1.485 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN
center_hole_diameter1.358 INCHES MINIMUM AND 1.370 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5331-00-406-1073
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-PRF-25732 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
SPECIFICATION/STANDARD DATA: 81349-MIL-PRF-25732 GOVERNMENT SPECIFICATION
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER: 1.852 INCHES MINIMUM AND 1.872 INCHES MAXIMUM IN
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81349-MIL-PRF-25732 GOVERNMENT SPECIFICATION
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.852 INCHES MINIMUM AND 1.872 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
MS28775-028Interchangeable
interchangeable cross-reference
interchangeable
34702-83Interchangeable
interchangeable cross-reference
interchangeable
42091-01-40-002PC42Interchangeable
Same NIIN cross-reference
interchangeable
34702-83 V1AInterchangeable
Same NIIN cross-reference
interchangeable
SAE-AS29513Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-PRF-25732?
MIL-PRF-25732 is a O-RING.
What parts can replace MIL-PRF-25732?
There are 5 known substitutes for MIL-PRF-25732: MS28775-028, 34702-83, 42091-01-40-002PC42 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-PRF-25732?
MIL-PRF-25732 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-406-1073. This indicates validated use in U.S. government and defense supply chains.
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