Mat seals are used with electrical connectors and designed with individual wire openings. The mat seal securely retains the wiring and provides strain relief during wire crimp and assembly, and protects the connections from the elements like water and heat. Oil-bleeding LSRs are chosen for their resistance to water and extreme temperatures and improved ease of assembly by SIMTEC’s customers. Depending on the size and production capacity requirements, molds are designed with up to 64 cavities or may be suited for utilization of SIMTEC base molds. Interchangeable core pins and inserts for round or square terminals offer additional design flexibility. Liquid injection molding allows reducing scrap commonly found with other technologies and eliminates secondary operations such as die cutting.

- https://www.simtec-silicone.com/why-lsr-automotive-industry/