Liquid Silicone Rubber Thin Walled Diaphragms

Liquid Silicone Rubber Thin Walled Diaphragms

August 24, 2011

Minnesota Rubber and Plastics

High strength and good flexibility are important features in thin-walled diaphragms that are custom injection molded of liquid silicone rubber (LSR) by Minnesota Rubber and Plastics.

These diaphragm sealing devices, when molded of LSR material, improve design function and cost efficiency over similar components molded of lesser grade compounds.

The thin-walled diaphragms are used in a broad range of healthcare related applications, from dispensing and fluid filtration systems to purification systems. These component seal  applications require long term seal life where temperature variation and resistance to aging are important design considerations. Also, uninterrupted operation for extended periods is important in these applications. LSR has good heat resistance to +180°C and good flexibility down to -45°C. It also has good electrical insulating characteristics and resists UV radiation and weathering.

Additional advantages of these LSR diaphragms from Minnesota Rubber and Plastics include a very clean molding process with no material pre-processing. Depending on part complexity, components can be molded with minimal flash. LSR material has repeatable, short cycle times and provides reduced or eliminated secondary operations. Compared to other materials and processes, this means lower labor content due to reduced manufacturing steps.

Minnesota Rubber and Plastics is equipped to provide assistance with design and materials engineering from a broad range of medical grade material options. In addition to LSR, these include compounds compliant with ISO 10993, USP Class VI, and FDA requirements. MR&P operates an ISO 13485:2003 certified quality management system and manufactures a broad range of custom medical seals in Class 10,000 and Class 100,000 clean rooms.

In addition to manufacturing components and seals, Minnesota Rubber and Plastics’ precision molding capabilities comprise of silicone molding and bonding, processing of high-performance rubber and plastics, rubber-to-plastic conversions, and metal-to-plastic conversions. These capabilities include the manufacture of complete medical device and pharmaceutical products involving complex assembly through final packaging.

Since 1945, Minnesota Rubber and Plastics has built a world-wide reputation founded on a unique, science-based approach that has made the company a preferred manufacturing partner for medical and pharmaceutical industry leaders in North America, Europe and Asia.

Minnnesota Rubber and Plastics’ global, large-scale manufacturing facilities are based in five countries with capabilities to handle the largest volumes, including multi-year partnership contracts. The company’s experience and unique ability to offer both rubber and plastic combination medical device assemblies result in greater engineering design and production efficiencies. These result in reduced development time, reduced costs and decreased time-to-market.

For complete information, call 952-927-1400, see at, Email:, Or write to Minnesota Rubber and Plastics, 1100 Xenium Lane North, Minneapolis, Minnesota 55441.