Liquid Silicone Rubber

Engineered Plastics is a liquid silicone rubber molder in Wisconsin. Custom liquid silicone rubber molding in WI is one of our capabilities.

Liquid Silicone Molding

We are a liquid silicone molding company. As a custom liquid silicone molder in WI, we provide LSR as a capability.

Engineered Plastics Corp. Engineered Plastics Corp.



At Engineered Plastics, we combine the personal approach of a small manufacturing facility with the technology, experience, and process controls that are normally only found at facilities much larger. We don't just mold plastics and liquid silicone rubber, we take the time to do it right.
• Plastic Injection Molding
Because our approach to plastic injection molding keeps customers such as Pentair, Frabill, and Rockwell satisfied; our partnerships have lasted nearly 20 years. We provide up-front engineering assistance and material selection which has often helped us to find ways to mold parts that were once considered "non-moldable," and have reduced or eliminated secondary processes such as machining or hand-finishing for many of our customers. We have extensive experience with complex molds, unscrewing cores and multi-cavity layouts as well as engineering resins such as PPE, glass reinforced nylon and polyester, and commodity resins such as polypropylene and HDPE.
• Liquid Silicone Molding
Better up-front design and two-shot molding opportunities makes Engineered Plastics the right choice for custom seals and gaskets. By eliminating secondary operations common to traditional "black rubber," we take advantage of our knowledge of efficient, sophisticated processes to save labor and assembly costs. We can bond LSR directly to plastic parts through two-shot molding, processing parts at thermoplastic cycle times with the highest quality standards. Our LSR capabilities offer great design flexibility and can also be modified for improved performance in ethanol-based or biofuel-based applications.
• Quality Control Every Step of the Way
Our quality control process begins before your purchase order is even written. Our engineering staff will meet with you to review your part requirements, assist in material selection, and suggest design modifications if needed. We use mold flow analysis software to detect potential problems during the design phase and actively monitor production using real-time process monitoring so problems can be detected and corrected during production, rather than inspecting parts after production and finding problems when it is too late. We are ISO 9001-2000 Certified and use AIAG's PPAP process to be sure our processes are consistent and will produce parts to your specifications.
• Facilities List
Manufacturer Clamp Size Shot Size Dist. Tie Bars Max. Daylight
Van Dorn 55T 3.3 oz 14.6 x 14.6 24"
Van Dorn 85T 5 oz 16 x 13.6 28"
Van Dorn 85T 5 oz 16 x 13.6 28"
Van Dorn 85T 5 oz 16 x 13.6 28"
Van Dorn 85T 5 oz 16 x 13.6 28"
Van Dorn 230T 20 oz 22.1 x 22.1 42"
Van Dorn 230T 30 oz 22.1 x 22.1 42"
Van Dorn 230T 26 oz 22.1 x 22.1 42"
Van Dorn 230T 20 oz 22.1 x 22.1 42"
Van Dorn 300T 30 oz 25 x 25 49"
Van Dorn 300T 40 oz 25 x 25 49"
Van Dorn 300T 30 oz 25 x 25 49"
Van Dorn 300T 30 oz 24 x 24 46"
Van Dorn 300T 26 oz 25 x 25 49"
Van Dorn 300T 30 oz 25 x 25 49"
Van Dorn 400T 80 oz 28.1 x 28.1 54"
Van Dorn 770T 80 oz 36.5 x 36.5 52"
Engel (LSR) 110T 2.8 oz Tie-Barless 33"