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Technical Data Sheet
PartsTable / COMPONENT / MB2125-1PC11
MB2125-1PC11 ✓ 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 material: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.750 INCHES NOMINAL IN, housing_bore_diameter: 9.250 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 7.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-8298, 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
MB2125-1PC11
NSN: 5330-00-154-8298
FSC: 5330
CAGE: 20263 — MKT GEOTECHNICAL SYSTEMS (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.750 INCHES NOMINAL IN
housing_bore_diameter9.250 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter7.750 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-154-8298
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MB2125-1PC11 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
•
ACCOMMODATED SHAFT DIAMETER: 7.750 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
•
HOUSING BORE DIAMETER: 9.250 INCHES NOMINAL IN
•
SEAL WIDTH: 0.750 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER7.750 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALLEATHER SEALING ELEMENT
HOUSING BORE DIAMETER9.250 INCHES NOMINAL IN
SEAL WIDTH0.750 INCHES NOMINAL IN
CASE STYLESQUARE
SEALING ELEMENT STYLEANGULAR
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
5-5120Interchangeable
interchangeable cross-reference
interchangeable
5-5120XInterchangeable
interchangeable cross-reference
interchangeable
5.5120 X DISCInterchangeable
interchangeable cross-reference
interchangeable
516865Interchangeable
interchangeable cross-reference
interchangeable
GM32Interchangeable
interchangeable cross-reference
interchangeable
B8287AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MB2125-1PC11?
MB2125-1PC11 is a SEAL,PLAIN ENCASED.
What parts can replace MB2125-1PC11?
There are 22 known substitutes for MB2125-1PC11: 5-5120, 5-5120X, 5.5120 X DISC and 19 more. Substitute compatibility should be verified for your specific system.
Is MB2125-1PC11 still available?
MB2125-1PC11 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