Rubber O rings;
Material:: Silicon-rubber, Fluorine-rubber(Viton), NBR and so on .
Concerned standard:GB1235-76, GB3452.1-92
Cixi Sinston Sealing Material Co.,Ltd. No.:19 Gaojia Jintang,Zonghan Industrial zone,Cixi Zhejiang, China Tel:0086-574-63392037 Wechat:18958349848 or QQ ID:850205314 E-mail: sales@sinston.com Martin7757@hotmail.com website: http://www.sinston.com