"As title, I'm not the only customer who got this waste trap home only to find its rubber O-ring(s) missing, Fully check the bag's contents at the counter before you leave the shop. Apart from that, it does the job just fine. Does not incorporate a non-return valve on the waste spigot, though."
"Have been using these traps for a long time now and they have been great, but the last few i have used were very poorly made. The plastic around the seal on the bottom curved section of the trap were mis-shapped. This wouldnt allow the rubber o ring to seat and seal. A couple also had o rings missing. probabley thrown 4 out of the last 10 away. Not happy. Think flow plass need some better quality control."