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Technical Data Sheet
PartsTable / COMPONENT / MI1891-32PC11
MI1891-32PC11 ✓ 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: 0.500 INCHES NOMINAL IN, housing_bore_diameter: 3.000 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 1.875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-178-5134, 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
MI1891-32PC11
NSN: 5330-00-178-5134
FSC: 5330
CAGE: 20263 — MKT GEOTECHNICAL SYSTEMS (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.500 INCHES NOMINAL IN
housing_bore_diameter3.000 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter1.875 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-178-5134
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MI1891-32PC11 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
•
HOUSING BORE DIAMETER: 3.000 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
MATERIAL: STEEL CASE
•
ACCOMMODATED SHAFT DIAMETER: 1.875 INCHES NOMINAL IN
•
SEAL WIDTH: 0.500 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER3.000 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
MATERIALSTEEL CASE
ACCOMMODATED SHAFT DIAMETER1.875 INCHES NOMINAL IN
SEAL WIDTH0.500 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
4903-5Interchangeable
interchangeable cross-reference
interchangeable
431034Interchangeable
interchangeable cross-reference
interchangeable
925-01-011-2213Interchangeable
interchangeable cross-reference
interchangeable
8000-1435Interchangeable
interchangeable cross-reference
interchangeable
300128Interchangeable
interchangeable cross-reference
interchangeable
715941-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MI1891-32PC11?
MI1891-32PC11 is a SEAL,PLAIN ENCASED.
What parts can replace MI1891-32PC11?
There are 19 known substitutes for MI1891-32PC11: 4903-5, 431034, 925-01-011-2213 and 16 more. Substitute compatibility should be verified for your specific system.
Is MI1891-32PC11 still available?
MI1891-32PC11 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