"You do not need the silicone spray to fit this, they slot in very easily to the chamber base and into other risers if you are using more than one. I used two and it was the easiest thing to assemble ever, the base and lid all slot together perfectly. If you are using the lid that goes with this you don't need a sealing ring as the lid comes with one."
10 of 10 people found this review helpful.
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Review 2 for FloPlast 5-Inlet Inspection Chamber Riser 235mm