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Technical Data Sheet
PartsTable / COMPONENT / M44-1-3-8
M44-1-3-8 ✓ 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: RUBBER SYNTHETIC SEALING ELEMENT A, case_style: FLANGED, seal_width: 2.125 INCHES NOMINAL IN, special_features: TWO 0.125 INCH 27 NPTF HOLES IN HOUSING FLANGE FOR LUBRICATION CONNECTIONS IN, housing_bore_diameter: 2.250 INCHES NOMINAL IN, sealing_element_style: ANGULAR-OPPOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-388-7862, 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
M44-1-3-8
NSN: 5330-00-388-7862
FSC: 5330
CAGE: 58849 — FMC TECHNOLOGIES INC DIV MATERIAL HANDLING SOLUTIONS (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT A
case_styleFLANGED
seal_width2.125 INCHES NOMINAL IN
special_featuresTWO 0.125 INCH 27 NPTF HOLES IN HOUSING FLANGE FOR LUBRICATION CONNECTIONS IN
housing_bore_diameter2.250 INCHES NOMINAL IN
sealing_element_styleANGULAR-OPPOSED
accommodated_shaft_diameter1.375 INCHES NOMINAL IN
NSN5330-00-388-7862
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M44-1-3-8 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: 2.125 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 1.375 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT B
•
SEALING ELEMENT STYLE: ANGULAR-OPPOSED
•
HOUSING BORE DIAMETER: 2.250 INCHES NOMINAL IN
•
CASE STYLE: FLANGED
TECHNICAL CHARACTERISTICS (FLIS)
SEAL WIDTH2.125 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.375 INCHES NOMINAL IN
SPECIAL FEATURESTWO 0.125 INCH 27 NPTF HOLES IN HOUSING FLANGE FOR LUBRICATION CONNECTIONS IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT B
SEALING ELEMENT STYLEANGULAR-OPPOSED
HOUSING BORE DIAMETER2.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT A
CASE STYLEFLANGED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
44Interchangeable
interchangeable cross-reference
interchangeable
M44Interchangeable
interchangeable cross-reference
interchangeable
9211080Interchangeable
interchangeable cross-reference
interchangeable
MIL-M-11101Interchangeable
interchangeable cross-reference
interchangeable
M-44/UInterchangeable
interchangeable cross-reference
interchangeable
7368578Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M44-1-3-8?
M44-1-3-8 is a SEAL,PLAIN ENCASED.
What parts can replace M44-1-3-8?
There are 10 known substitutes for M44-1-3-8: 44, M44, 9211080 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M44-1-3-8?
M44-1-3-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-388-7862. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026