cap lid 1.Made of 100%silicone 2.Available in design and color 3.Precisely silicone washer mold design 4.OEM/ODM silicone cap features ... : Attention:Custom-made is welcomed! 1. Materials advice: silicone and rubber (EPDM, also NBR, SBR, CR, NR, etc),as ... mass production mold, usually in1- 2 weeks 6. Color: black, transparent, green, red, yellow, etc7 .Hardness: 30 to 90 shore A ...