dear sir as a lead manufacturer in china,our factory specificalize in o rings,oring kits,plastic parts,rubber parts,metal parts ,Steel springs,stainless springs and all material mould tooling 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 Material: Santoprene, Pe, Pp Pvc, Polypropylene, ABS, Polycarbonate, LDPE, HDPE, POM, Acetal, Nylon,NR,SBR, NBR, EPDM, CR,Silicone, VITON,FKM,Steel,Brass,Alininum,Cooper,Stainless,please sent your email to our factory email addres: so as to we shall quote and sent samples to you; Mr Leo/sales