These flexible seals are used to seal 54mm copper column pipes as used in the adjustable reflux column still.
NEW DESIGN: Our new vapour seals are made from ethanol resistant silicone, are thicker (double as thick as previous seals), stronger, tougher, seal perfectly and can withstand temperatures of up to 250 Degree C.
For a perfect seal, turn the seal inside out before fitting over a join in the column.
Brown in colour to compliment the copper pipe! (who said we don't do color matching?)