... , different sizes, good performance. 2.100% factory sales&tested 3.Durable Rubber Spring can be made by various of material, so it ... can be EPDM Rubber Spring, Viton Rubber Spring,Nitrile Rubber Spring and so on.Rubber Spring can instead of metal spring ... Machine, Food Machine,Plastic Machine ect.We can make the Rubber Spring as per your drawing as well as your samples ...