Thomas & Betts 431 Insuliner Nylon EMT Insulating Sleeve, 4-Inch

Thomas & Betts 431 Insuliner Nylon EMT Insulating Sleeve, 4-Inch

The Thomas & Betts 431 Insuliner is a 4-Inch nylon insulating sleeve engineered to fit over the cut end of EMT (electrical metallic tubing) conduit runs. Molded from durable nylon, this nonmetallic, nonconductive sleeve is placed at the conduit termination point to shield conductor insulation from abrasion, cuts, and nicks caused by sharp edges or burrs left after cutting or reaming the tubing. As a recognized Insuliner-series component, the 431 is sized specifically for 4-Inch EMT applications and is intended for use by electrical professionals installing or servicing conduit systems in commercial and industrial settings.

Key Features

• Trade Size: Sized for 4-Inch EMT conduit, providing a precise slip-on fit over the tubing end.
• Durable Nylon Construction: Molded nylon material resists abrasion and will not corrode the way an unprotected metal edge can.
• Insuliner Insulating Sleeve Design: Slips over the conduit end to protect conductor insulation from sharp edges and burrs left at the cut end of the EMT run.
• Nonmetallic, Nonconductive Material: Nylon construction adds a dielectric buffer at the conduit termination point without introducing additional conductive metal parts.
• Slip-On Fit: Designed to install directly onto the 4-Inch EMT conduit end for straightforward placement in the field.
• Lightweight Profile: Nylon build keeps the sleeve lightweight compared to metallic bushings while still protecting wire insulation.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• 4-Inch EMT Conduit Wiring Systems
• Commercial and Industrial Electrical Installations
• Conductor Insulation Protection at Conduit Terminations
• Panel, Enclosure, and Raceway Connection Points
• New Construction and Electrical Renovation Projects

Why Thomas & Betts?

Thomas & Betts is a long-established name in conduit and raceway accessories, and the 431 Insuliner nylon sleeve reflects that focus on practical, durable components for professional electrical work at the point where cut EMT tubing is terminated. Molded from nylon for corrosion-free, nonconductive performance at the conduit end, the 431 gives electricians a simple, reliable way to protect conductor insulation from abrasion, cuts, and nicks during and after EMT conduit installation. Choose Thomas & Betts Insuliner sleeves for conduit accessories built to support dependable, long-lasting electrical systems in commercial and industrial applications.