Silicone Stopper Rubber Plug Sealing Dust-Proof Caps Black White Diameter 9-19mm
Not easy to deform. 13.5mm, 14mm, 15mm, 15.5mm, 16mm, 17mm, 18mm, 19mm. Corrosion resistance acid and alkali resistance. Material : Silicone Rubber. Temperature resistance : -40 to +250. High and low temperature resistance.