... quality 4.Material: Fluorine rubber,AFLAS rubber ect Hengshui Protecting device capsule,rubber seal 1.Pass ISO 9001 2.Free sample ... ectOur factory found in 2001,and specializes in producing Protecting device capsule.The material is Fluorine,silicon rubber,high saturation cube ... is steady,firmly get user's favorable comment. Hengshui Protecting device capsule,rubber seal