About us Tianjin SWKS Technology & Development Co., Ltd is professional in designing, developing and manufacturing rubber products for more than 10 years. Today, SWKS has modern facilities manufacturing o-rings, custom-molded elastomeric seals, radial shaft seals, oil seals, hydraulic seals, PU piston&rod seals, nonstandard rubber seals, rubber-to-metal bonded parts, reinforced fabric seals and rubber shock absorbers....[More 12 years