There's a seal on mcalpine stuff that we basically tighten by hand and give a nip. You shouldn't need to PTFE it or anything like that.
You could just replace it with a new shallow trap like that, but stripping it to see the cause is the first thing but it also looks like its running up hill from the photo too but that shouldn't cause the leak more running away.
Thanks, wasn’t the shallow trap but looks like the plug/overfill pipe above it. Going to disassemble tomorrow after some sleep. Had about four hours on a 12 hour flight which landed at 5am so it’s beer and bedtime soon.
There's a seal on mcalpine stuff that we basically tighten by hand and give a nip. You shouldn't need to PTFE it or anything like that.
You could just replace it with a new shallow trap like that, but stripping it to see the cause is the first thing but it also looks like its running up hill from the photo too but that shouldn't cause the leak more running away.