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Our pipe collars are manufactured from a high performance material bonded to the inside of a steel sleeve, which on exposure to heat from a fire will rapidly expand inwards to squeeze the collapsing plastic pipe until the aperture is completely sealed. Tested to BS476 part 20 and EN 1366-3 for use on UPVC, ABS, MDPE, HDPE and PP pipes to 4 hours fire resistance.
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