PTFE sandwich spacer is made by asbestos rubber plate wraped with PTFE,which possesses such features as anti-corr ,FeaturesPTFE sandwich spacer is made by asbestos rubber plate wraped with PTFE,which possesses such features as anti-corrossion,and not reaction with dense acid,alkaline,and other oxidant.Specification Nominal(Dg)insaidedia(mm)outsidedia(mm)height(mm) Nominal(Dg) insaidedia(mm) ...