"These pipe inserts fit really well and the sealing rings give that extra peace of mind. However much the joints are rotated they never leak which makes working in tight spaces easy. I have used these with plastic pipe in compression joints and they work well. Even though they are plastic, the inserts are solid enough to withstand having an olive crimped onto the pipe with no sign of being compressed. I make sure I always have a couple of packs in my toolbox."
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Review 2 for JG Speedfit STS22P Superseal Insert 22mm Pack of 5