Dyseals mechanical seal company is specialized in making pressureless sintered silicon carbide/ssic sleeves/tubes/bushes in China for 30 years. Pressureless sintered silicon carbide/ssic sleeves/tubes/bushes with trustable quality and reasonable price is the right company you are looking for. Dyseals is operating ERP system characterized with mechanical seal industry and tele-work and a state hightech enterprise in pressureless sintered silicon carbide/ssic sleeves/bushes/tubes. Pump manufacturers/companies, pump repairs and mechanical seal companies are welcome to establish mutual business relationships on mutual benifits and interest.