Dyseals is specialized in making mechanical seals DY502-18 in China for 30 years. Dyseals is able to provide mechanical seal DY502-18 with high quality and competitive price,the right one company you are looking for. DYseals is operating ERP system characterized with mechanical seal industry and tele-work and a state hightech enterprise in mechanical seals.Ceramic and silicon carbide WRAS and FDA certificates are available from us.