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Technical Data Sheet
PartsTable / COMPONENT / 725157
725157 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: PLASTIC DIALLYL PHTHALATE AND GLASS FIBER BOARD, body_style: BARRIER TYPE, case_style: SQUARE, seal_width: 0.438 INCHES NOMINAL IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, base_thickness: 0.438 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-849-0987, 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
725157
NSN: 5330-00-849-0987
FSC: 5330
CAGE: 35311 — AMERICAN STANDARD INC WESTINGHOUSE AIR BRAKE CO DIV (USA)
SPECIFICATIONS
materialPLASTIC DIALLYL PHTHALATE AND GLASS FIBER BOARD
body_styleBARRIER TYPE
case_styleSQUARE
seal_width0.438 INCHES NOMINAL IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
base_thickness0.438 INCHES IN
terminal_designLINKED NONFEEDTHRU
outside_diameter3.756 INCHES NOMINAL IN
surface_treatmentNICKEL TERMINALS
board_constructionHOLLOW CONSTRUCTION WITHOUT INSULATED STRIP
board_overall_width1.812 INCHES IN
board_overall_height0.750 INCHES IN
NSN5330-00-849-0987
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 725157 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
•
SEAL WIDTH: 0.438 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR-OPPOSED
•
OUTSIDE DIAMETER: 3.756 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 3.751 INCHES NOMINAL IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
SURFACE TREATMENT: PLASTIC CASE
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT B
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH0.438 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR-OPPOSED
OUTSIDE DIAMETER3.756 INCHES NOMINAL IN
HOUSING BORE DIAMETER3.751 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
SURFACE TREATMENTPLASTIC CASE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT B
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT A
ACCOMMODATED SHAFT DIAMETER2.750 INCHES NOMINAL IN
CASE STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
1303596Interchangeable
interchangeable cross-reference
interchangeable
DOUBLE BUBBLEInterchangeable
interchangeable cross-reference
interchangeable
04001Interchangeable
interchangeable cross-reference
interchangeable
NC805PC52Interchangeable
interchangeable cross-reference
interchangeable
NC1901PC52Interchangeable
interchangeable cross-reference
interchangeable
27273Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 725157?
725157 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 725157?
There are 23 known substitutes for 725157: 1303596, DOUBLE BUBBLE, 04001 and 20 more. Substitute compatibility should be verified for your specific system.
Is 725157 still available?
725157 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