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Technical Data Sheet
PartsTable / MRO / 186039
186039 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The SWITCH,PROXIMITY is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.500 INCHES NOMINAL IN, terminal_type: WIRE LEAD, overall_length: 107.7 MILLIMETERS NOMINAL MM, mounting_method: BUSHING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-9035, 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
MRO→ MRO_GENERAL→ 186039
NSN: 5330-00-154-9035
FSC: 5330
CAGE: 82722 — WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP DBA WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.500 INCHES NOMINAL IN
terminal_typeWIRE LEAD
overall_length107.7 MILLIMETERS NOMINAL MM
mounting_methodBUSHING
overall_diameter17.8 MILLIMETERS NOMINAL MM
style_designatorCYLINDRICAL
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE
housing_bore_diameter2.374 INCHES NOMINAL IN
sealing_element_styleANGULAR
contact_action_stimulusINCREASE
NSN5330-00-154-9035
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 186039 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
•
HOUSING BORE DIAMETER: 2.374 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 1.344 INCHES NOMINAL IN
•
MATERIAL: LEATHER SEALING ELEMENT
•
SEALING ELEMENT STYLE: ANGULAR
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
SEAL WIDTH: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
HOUSING BORE DIAMETER2.374 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.344 INCHES NOMINAL IN
MATERIALLEATHER SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
MATERIALSTEEL CASE
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
SEAL WIDTH0.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
13466Interchangeable
interchangeable cross-reference
interchangeable
500025-12-12SInterchangeable
interchangeable cross-reference
interchangeable
15T3-12-12Interchangeable
interchangeable cross-reference
interchangeable
SOILMASTERInterchangeable
interchangeable cross-reference
interchangeable
12260Interchangeable
interchangeable cross-reference
interchangeable
100PAR/BW/85WM 6PK/120VInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 186039?
186039 is a SWITCH,PROXIMITY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 186039?
There are 14 known substitutes for 186039: 13466, 500025-12-12S, 15T3-12-12 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 186039?
186039 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-9035. 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