dear sir our factory specificalzie in all kinds of rubber parts,plastic parts,metal parts,springs and so on; All kinds of specification and shapes, your requests are available; Good quality, reasonable price,promote delivery; Your sample, drawings or idea are welcome; Fulfilling different kinds and quantities of orders to provide products from NR,SBR, NBR, EPDM, CR,Silicone, FI,Nylon,Plastic,metal so on;please sent your email to our factory email box: so as to our factory shall quote china best competitive price to you; Ms HeBei/sales