55 Shore A Rubber Ptfe Back Up Rings For Static Sealing
                                         
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                                            Shanghai Factory supply high quality backup rings seals PTFE backup rings PTFE Backup rings PTFE backup rings are used for static and dynamic applications. It's better used for static sealing applications with corresponding O-ring. The use of PTFE backup ......                                         
                                        
                                            Shanghai Qinuo Industry Co., Ltd.
                                         
                                        
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