rubber membrane: 1)Resistance to oil,fuels,chemicals,ect 2)Safe and hygienic 2) ... , just you send me the sample, drawing or design. Features:1)Various material available:SILICONE,NR,NBR,EPDM,CR,IIR,VR ... )State standard and non-state standards sizes available.7)Package:1,Polybag and carton .2,Customized welcome.8)OEM orders are ...