DIN: 3760 Standard. Common Materials: Nitrile, Fluorocarbon, Silicone, EPDM, Polyacrylate, Neoprene. Spring make: Carbon Steel Stainless Available. Pressure Rating: Max 7psi. Mounting: Press-fit. Comments: Common grease seal type. Rotary Motion Only. Generally used for sealing lower pressure (up to 0.5 bar7psi) fluids or heavy greases depending on shaft speed. If a backup ring is used, it can operate at medium pressure (4 bar57psi).