Product Description TG71U.TG74U is mature sealing structure design, used in the different media conditions due to extend material options, Mass production in standar modular, with low cost and competitive price. Products Features Wave Spring Bi-directional EN 12756 Standard Equivalent to M7N Combination Materials 1.Rotary Face Reaction Bonded Sic RBSIC O Sintered Silicon Carbide SSlC O1 Tungsten Carbide.Ni-binder W Cr-Steel (Solid) E 2.Stationary Seat Carbon graphite, resin impreg Ak Carbon graphite,antimony impreg AD Reaction Bonded Sic RBSIC O Sintered Silicon Carbide SSlC O1 Tungsten Carbide.Ni-binder W 3.Auxiliary Seal Fluoroc arbon RubberFKM V Etylene Propylene RubberEPDM E Perfluorocarbon Rubber FFKM K 4.Spring GrNi-Steel (AlS1304) F GrNiMo-Steel (AlS1316) G 5.Metal Parts GrNi-Steel (AlS1304) F GrNiMo-Steel (AlS1316) G Related Products FAQ Q: Are you a factory or a trading company? A: We are a factory manufacturing mechanical seals and parts and we provide perfect OEM and after-sale service. We export mechanical seals to over 108 countries since 1998. Q: Can you send me the video to show how the machine works? A: Certainly, we have video of every standard machine and can send to you by Email or other way you want. Q: How can I pay my order? A: We accept T/T, Paypal, Online Payment to pay. Q: Do you have any certificate? A:We have passed ISO9001:2008,FDA,REACH,ROHS and obtained EC1935 2004 Cerification Q: When your company was founded? A: WenZhou TianGu Seal Co., Ltd. was established in 1982.