Molex Perma-Seal waterproof adhesive terminals and splices

The Molex Perma-Seal terminals and splices provide a rugged, environmentally sealed connection for wire sizes 8–22 AWG that will insulate, seal and protect joints from physical abuse and abrasion, water, salt and other corrosive compounds.

The inner wall of the heat-shrinkable sleeve is lined with a hot-melt adhesive that is inert at room temperature, permitting wires to be inserted easily into the splices and terminals. As the sleeve is heated, the adhesive melts and flows under pressure from the tubing. This action fills any existing voids and creates a seal that repels moisture or dust incursion, even during pressure cycling, and withstands rigorous tests that can be applied to high-performance splices, for example, the salt fog test in MIL-T-7928.

The insulation is made of high-performance NiAc third-generation material, which the company claims shrinks up to 40% faster and is significantly thicker than competing polyolefin or nylon products. This provides good durability, improved efficiency and lower labour cost, and reduces the potential for wire insulation damage. The product is also abrasion resistant to prevent wearing caused by excess vibration.

A broad range of terminal styles is available to suit various applications.