... .Certificate:ISO; SGS 3.high quality lowprice rubber bellow(1)Silicon Rubber,NBR,NR,FKM (2)Temperature Range: -35 to ... Molded bellows are available in a several rubber materials including NR, CRor silicone rubber and in a large variety of ... air-permeable, etc. Size and LogoAccording to your request.Color black, transparent, green, red, yellow, etc.CertificationsAll manufacturing processes are ...