|We manufacture our valve components from silicone, fluorosilicone, fluorocarbon and other exotic elastomeric materials. In the table on the parts spec sheets in the product catalog you can find which standard materials are used for the part of your interest. If you have a preference for a non-standard material, perhaps one that meets a specific material specification or perhaps one of the very exotic polymers like Kalrez, we invite you to let us know. Often we have ready solutions or find one for you.
For valves that are used in medical device and pharmaceutical applications we have silicone materials (VMQ) that pass USP class VI and ISO 10993 biocompetability tests and that are suitable for sterilization. These materials will also pass potable water and food application tests.
Applications in Hydrocarbons like automotive fuel including fuel alcohol and other fuel mixtures or in engine oil often use fluorosilicone (FVMQ) and fluorocarbon (FKM) rubber. Our materials do meet several automotbile manufacturers material specifications.
For general purpose valve applications we often recommend silicone rubber (VMQ)
As far as the resistance of elastomeric materials against chemicals is concerned we refer to the table below. Attacked in this respect may not necessarily mean that the material is not suitable in your application. Often the part design can compensate for it. Contact us in case of doubt.
Generally speaking, silicone, fluorosilicone and fluorocarbon can all serve high temperatures up to 200°C. With low temperatures you can use silicone and fluorosilicone. They go well below -40°C. Fluorocarbon is less suitable for real low temperature applications even though we have certain types that are low temp resistant.
Other elastomeric materials like nitrile (NBR) , ethylene propylene (EPDM) generally range between -20 and 120°C.