Being the opening between the electric wires of the wire harness which the Interpolation it passes in seal manner and the seal structural null grommet

摘要

PROBLEM TO BE SOLVED: To improve a sealing material which is to be injected into the inside of a grommet to fill the gaps among the electrical wires of a wire harness. SOLUTION: The sealing material used comprises a two-pack reactioncuring sealing material which consists of a principal component comprising a blend of a viscosity reducer and a cure accelerator at a specified ratio and a curing agent at a weight ratio of the principal component to the curing agent of (5.5:1) to (1:1) and which has a viscosity of 200-500cps and a gel time of 3-7min. The viscosity reduce compounded with the principal component comprises a mixture of triethanolamine and dibutyltin dilaurate, and the cure accelerator used comprises a mixture of a low-molecular weight aromatic hydrocarbon and an antioxidant. The curing agent used comprises a polyisocyanate.