Seal material is a pertinent issue for solenoid valves. The seal in solenoid valves can be made of a variety of materials, but we use VITON and Nitrile Rubber. They are both great options, but your desired use will determine which type to get. If you are using fuel or other petroleum based mediums, you will want to go with the VITON seal. For most other applications, the decision is entirely up to you. Browse all our valves, or sort specifically by the seal below.