DescriptionDURAN® Screw cap, GL 45, PBT, with 2 silicone seals (double sided PTFE coated) with aperture (11,5 mm) for pH sensor SpecificationsFeaturesDocuments DURAN® Screw cap, GL 45, PBT, with 2 silicone seals (double sided PTFE coated) with aperture (11,5 mm) for pH sensor Material PBT For chemical and thermal resistance, see our chemical and thermal resistance page.