CLEAPSS DT - Supporting practical work in science, technology and art

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Spreading cement on joint surfaces; pouring from a large stock container to smaller ones. Sealing metal joints in plumbing.‘Liquid PTFE’ does not contain PTFE; it is a flexible setting sealant used in plumbing on metal threads as an alternative to PTFE tape. Formulations vary but some contain methacrylates, acrylic acid and organic peroxides.
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