We Ningbo RC Industry Co.,Ltd commit ourselves to developing and selling lots of seal products,such as; 1) Mechanical Seal Faces, Shaft Sleeves, Bushes/Bearings, in: - Tungsten carbide (both Cobalt bonded and Nickel bonded) - Silicon carbide (both SiC RB and Sintered SiC) - Carbon graphite (both resin-impregnated and metal-impregnated) - Aluminum Oxide (Al2O3) 2) Mechanical Seals: - Single Mechanical seals - Cartridge Seals - Another seals, according to the customers' drawings 3) Industrial rubber products If you are going to purchase mechanical seals .Welcome visit our website: www.rcseal.com, and contact us.