In cryogenic environments below -100°C, ordinary rubber freezes as brittle as glass, shattering at the slightest touch. However, there is a special material that remains soft and elastic: Phenyl Silicone Rubber. The secret of this material lies in the introduction of bulky phenyl groups into its molecular structure. These phenyl groups act like "obstacles" on the molecular chain, disrupting the regular arrangement and preventing the material from crystallizing and hardening at low temperatures. Consequently, the brittleness temperature of low-phenyl silicone rubber can reach as low as -120°C, making it the rubber with the best low-temperature performance currently available. In addition to cold resistance, phenyl silicone rubber possesses excellent radiation resistance. As the phenyl content increases, its ability to withstand radiation and ablation improves significantly, making it an ideal choice for seals and damping components in extreme environments such as aerospace and nuclear power equipment.
Phenyl silicone rubber IOTA BHTV 3830 series