... -Resistant up to 230 degrees centigrade 4) Any color available Silicone Rubber Seal Color: Translucence, Dark Red, Pink, Grey, Black, Milk ... .Product No. RC 001Physical Character: Mould press with 100% virgin silicone rubber material, with good aging resistant, ozone resistant, heat resistant ... to airproof seal on all kinds of machines and others................ silicone rubber seal