Sealing elastomer is a polymer material with excellent flexibility, scalability and electrical insulation properties. With small elastic modulus, high elongation, good resistance to air permeability, resistance to various chemical dielectric and electrical insulation properties, sealing elastomer by Nystein is developed for shock absorption, sealing, flexing, abrasion resistance, corrosion resistance, insulation and other needs. NYS-SEALOR® SR 300V is a kind of flame-retardant non-conductive sealing rubber specially developed by Nystein. Its operating temperature range is -55℃ to 160℃ and is used in the situation of flame retardant and heat resistance