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Cylindrical galvanized tanks are sealed using liners manufactured from either EPDM or BUTYL synthetic rubber membranes.EPDM and BUTYL membrane sheeting provides a completely waterproof seal due its closely packed molecular structure making it extremely resistant to the transmission of liquids. Both EPDM and BUTYL have outstanding ageing and weather-resistant properties. Their cross-linked molecular structure gives excellent ageing over a long period of time even when exposed to the atmosphere, sunlight, ultraviolet radiation and ozone. Strength and elasticity remains virtually unchanged over many years, without shrinking, hardening or cracking. Liners manufactured from BUTYL rubber have received approval from the UK Water Regulations Advisory Scheme (WRAS), in accordance with BS6920, for use in storage of potable water. Rubber Liner Data Sheet Effects of Chlorination on Rubber Liners |
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