Silicone rubber rings are extremely durable, staying flexible in a wide temperature range. It is able to withstand over 200oC / 392oF and is extremely resistance to damage from UV light. We offer Vacuum Tube Solar Water Heater Silicon Rings that are available in ID 58. It is used as a Connector or Sealing ring for Evacuated Tubes to the Water Tank of Solar Water Heater Systems. Silicon used is of Premium Quality providing higher Tensile, Elongation and excellent Compression set properties
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