Ecm Industries Llc LTR-400 Liquid Electrical Tape 4 Oz Red

Product Description

The ECM INDUSTRIES LLC LTR-400 is a 4 oz red liquid electrical tape designed for waterproof insulation of wiring, cables, and electrical components. The rubber-based coating applies at 5-7 mils per coat and delivers 200 volts per mil of dielectric protection. Unlike standard electrical tape, this formulation stays flexible — it will not harden, unravel, or become brittle in extreme weather conditions. It ships in a transparent plastic bottle for easy identification and application. Licensed electricians and field technicians rely on this product for fast, brush-on insulation in wet or outdoor service environments.

This liquid tape is rated for both indoor and outdoor use, making it well suited to a wide range of electrical service and installation applications. Common uses include insulating spliced cables, outdoor lighting connections, underground wiring, alarm and security system wiring, and utility trailer wiring harnesses. Its waterproof, rubber-based formula holds up to moisture exposure and temperature extremes without re-work, reducing callback risk on outdoor or buried connections.

Key Features

• 200 volts per mil dielectric protection — twice the rating of many competing liquid tapes
• Applies at 5-7 mils per coat for consistent, measurable insulation buildup
• Rubber-based coating stays flexible and will not harden, crack, or become brittle in extreme weather
• Waterproof formula rated for indoor and outdoor use, including underground wiring applications
• Suitable for cables, electronics, outdoor lighting, alarms, security systems, and utility trailers
• Packaged in a transparent plastic bottle for easy level monitoring and controlled application

Compatibility

Designed as a brush-on liquid electrical insulation for use on low-voltage wiring, splices, and connections where standard electrical tape is impractical or insufficient, including buried, wet, and outdoor-exposed installations.

Installation Notes

This product is typically applied by licensed electricians or experienced installers working on insulation and moisture-sealing of electrical connections. De-energize and lock out the circuit before applying to any wiring. Allow each coat to fully cure before applying additional coats or restoring power. Follow applicable NEC requirements for the specific wiring method and installation environment.