Oil-resistant O-ring made of ELASTOSIL^® LR 3016/65. WACKER, the Munich-based chemical group, will be presenting this new liquid silicone rubber at the K 2016 International Trade Fair for Plastics and Rubber in October. ELASTOSIL^® LR 3016/65 features enhanced oil resistance. Molded parts made of this material meet the latest standards of leading automakers.