... degree 4.Certification: SGS,ISO9001:2008 Ptfe seal gasket:1.Characteristics:Made of moulded or skived Ptfe.2.Application:Suitable for sealing in ... rod, PTFE pipe, PTFE film, HDPE rod, HDPE sheet, POM, PVC and so on.(3). Standard: ISO9001 Certification: SGS, ISO9001:2008 Ptfe seal gasket(seal tape)