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Technical Data Sheet
PartsTable / COMPONENT / 25J749PC5
25J749PC5 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include color: BLACK, material: STEEL CASE, case_style: SQUARE, seal_width: 0.375 INCHES NOMINAL IN, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-805-8379, 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
25J749PC5
NSN: 5330-00-805-8379
FSC: 5330
CAGE: 88657 — WESTINGHOUSE ELECTRIC CORP POWER GENERATION-TURBINE DIV (USA)
SPECIFICATIONS
colorBLACK
materialSTEEL CASE
case_styleSQUARE
seal_width0.375 INCHES NOMINAL IN
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL
housing_bore_diameter3.876 INCHES NOMINAL IN
sealing_element_styleANGULAR
maximum_pressure_rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
accommodated_shaft_diameter3.000 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3000 FEET PER MINUTE FT
NSN5330-00-805-8379
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 25J749PC5 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
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
TEMP RATING: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
•
COLOR: BLACK
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT DIAMETER: 3.000 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 3.876 INCHES NOMINAL IN
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
COLORBLACK
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT DIAMETER3.000 INCHES NOMINAL IN
HOUSING BORE DIAMETER3.876 INCHES NOMINAL IN
SEAL WIDTH0.375 INCHES NOMINAL IN
HARDNESS RATING80.0 SHORE DUROMETER A NOMINAL OVERALL
MATERIALSTEEL CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
2171Interchangeable
interchangeable cross-reference
interchangeable
17-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-16208Interchangeable
interchangeable cross-reference
interchangeable
T2761Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
121Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 25J749PC5?
25J749PC5 is a SEAL,PLAIN ENCASED.
What parts can replace 25J749PC5?
There are 16 known substitutes for 25J749PC5: 2171, 17-1, MIL-P-16208 and 13 more. Substitute compatibility should be verified for your specific system.
Is 25J749PC5 still available?
25J749PC5 is currently cancelled.
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Last verified: July 2026