WACKER will debut POWERSIL 1900 A/B, a new high-consistency silicone rubber specifically designed for the production of composite hollow-core insulators with extruded silicone housing, at the upcoming K 2025 International Trade Fair for Plastics and Rubber in Dusseldorf, Germany, from October 8 15, 2025.

Supplied as a ready-to-use 2K addition-curing system, POWERSIL 1900 A/B is optimized for spiral extrusion manufacturing, a process that enables cost-effective production of even large-scale insulators with variable diameters, including conical shapes often difficult to achieve with conventional injection molding. This innovation allows manufacturers to produce high-precision, lightweight, and durable insulators for high-voltage applications such as bushings, instrument transformers, circuit breakers, and surge arresters.

The new material forms an electrically insulating silicone elastomer with exceptional resistance to tracking, erosion, and arcing, while maintaining water- and dirt-repellent surfaces that help eliminate the need for costly cleaning operations. It retains excellent dielectric performance even in salty, dusty, or high-humidity environments.

Thanks to its UV resistance, elasticity, and weather durability, POWERSIL 1900 A/B enhances power grid resilience by withstanding extreme weather, earthquakes, and vandalism better than traditional ceramic or glass alternatives. Weight savings of up to 80% compared to porcelain insulators also simplify installation.

Silicone elastomers have long been a staple in high-voltage engineering due to their hydrophobicity transfer, which prevents conductive layers from forming and reduces the risk of flashovers. WACKER s new POWERSIL 1900 A/B continues this tradition, offering a next-generation solution for the evolving needs of global power transmission infrastructure.

Source: www.wacker.com