Polymer OH 10 Polydimethyl siloxane Hanse Chemie Silicone (Si) SEALANT The Polymer OH series products are base polymers for the manufacture of condensation curing sealants formulations,and are suitable for the manufacture of 2-part formulations. These products are pure, unfilled polydimethyl siloxanes with OH end groups, and are available in a wide range of viscosities. Silicone sealants are among the most familiar chemically curing sealing materials. The primary component of these materials is a silicone polymer composed of a long chain of Si-O-Si units that gives the silicone its name. Silicone sealants have very attractive physical properties. They are UV-stable and have outstanding temperature stability, far exceeding that of other sealants. Silicones are long-term stable and have consistent properties even after long storage periods. The largest areas of application for silicone sealants are the construction industry and the "Do-it-yourself" market. Silicone sealants are also used in the automotive industry, in industrial applications and in the electrical and electronics industries. Unfilled polydimethyl siloxane with OH end groups. Designed as base polymer for sealants.