... our own raw material production base, major products have o ring, sealing ring, rubber gasket, rubber pad, silicone tube, rubber strip, etc ... centigrade;HNBR (-30~150), EPDM (-50~150), FPM (-20~200), SILICONE (-100~300)ColorRed,Orange, Yellow, Green, Blue, Puple, Black, White ... the best quality service, welcome to inquiry. Our company product silicone hand ring, if you have a mind please contact us ...