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37391 ✓ Verified by PartsTable
Lindy · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include material: STEEL COMP 1020, thickness: 0.140 INCHES NOMINAL IN, case_style: SQUARE, seal_width: 0.625 INCHES NOMINAL IN, design_type: LIMITED, bore_diameter: 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-5439, 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
37391
NSN: 5330-00-154-5439
FSC: 5330
CAGE: 80201 — SKF USA INC. DBA SKF AEROSPACE SEALING SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 1020
thickness0.140 INCHES NOMINAL IN
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
design_typeLIMITED
bore_diameter0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM IN
mounting_typeBRACKET W/THREADED HOLE HEAD
overall_width0.312 INCHES NOMINAL IN
overall_length0.260 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
bracket_quantity1
NSN5330-00-154-5439
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37391 MFR: Lindy ⚠ 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 MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
ACCOMMODATED SHAFT DIAMETER: 3.750 INCHES NOMINAL IN
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
•
MATERIAL: LEATHER SEALING ELEMENT
•
CASE STYLE: SQUARE
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 4.751 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
ACCOMMODATED SHAFT DIAMETER3.750 INCHES NOMINAL IN
SEAL WIDTH0.625 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
CASE STYLESQUARE
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER4.751 INCHES NOMINAL IN
MATERIALSTEEL CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
113B4325Interchangeable
interchangeable cross-reference
interchangeable
3739-1Interchangeable
interchangeable cross-reference
interchangeable
C118Interchangeable
interchangeable cross-reference
interchangeable
FBNL113Interchangeable
interchangeable cross-reference
interchangeable
5039-281Interchangeable
interchangeable cross-reference
interchangeable
373971Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 37391?
37391 is a RESISTOR,FIXED,WIRE WOUND,INDUCT manufactured by Lindy.
What parts can replace 37391?
There are 8 known substitutes for 37391: 113B4325, 3739-1, C118 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 37391?
37391 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-5439. 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