The set contains 2 seals each for the resin tank (Ø 11.6 mm), the resin chamber (Ø 7.5 mm) and the injector (Ø 11.6 mm). The material (MVQ - silicone rubber) has good chemical resistance. This means that the seals retain their shape despite regular, direct contact with the repair resin. Nevertheless, we recommend replacing all three seals after 6 months, as a certain amount of wear/abrasion occurs during use. Set consisting of: