Victor Reinz® Reinzosil® is a permanently elastic, universal silicone sealing compound with excellent resistance to fluids and extreme temperatures. Its durability, flexibility, and versatility make it a favorite among import car specialists. Reinzosil will not shrink or lose weight in high-heat environments, unlike competitor products—which may incorporate plasticizers of minor quality such as calcium carbonate or limestone. With superior resistance under load, even at high temperatures, Reinzosil is a one tube solution for many sealing needs.