RT507L is a silicone fine weave glass fabric leak proof tube which has been discontinued. Please contact firstname.lastname@example.org to inquire about other materials that may work in your application.
RT507 (NEMA G-7) is composed of a medium weight glass reinforcement combined with a silicone resin system. It meets the requirements of MIL-I-24768/17, Type GSG. RT507 is designed for exposure to arc, flame, or excessive heat in electrical applications, including rings, collars, spacers, inserts, bushings, insulators, brake liners, and welding tips.