The Glow-worm packing ring for use in the heat exchanger of Easicom, Essential, Ultracom, Ultracom2, Energy, Energy 7, Flexicom, Sustain, Ultimate 2, Home, Betacom, Ultimate 3, and Energy 2 units, as well as O-rings, gaskets and washers are used in many different areas of the boiler to join parts to pipework.
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