cast iron soil pipe

Hi I’m removing a WC for good, and need to cap the soil pipe. My question is, in the photograph you can see a brown (cast iron) collar that seems to connect plastic to the (cast iron) soil pipe. Do I cap with the collar left on, or if I need to remove it, how is this done? cheers Daljit

I have a soil pipe that I plan to remove and I really need some advice on how best to cap it off. It's a cast iron pipe, about a meter high from the ground floor with an air admittance vavle attached. I no longer have anything going to this waste so I'd like to cut it to ground level and cap it...

Hi all, was hoping for some advice from the forum. Getting a new patio done and while excavating around the sewer pipe I noticed that the clay collar around the cast iron soil pipe was cracked and leaking. (which explains the damp we've been getting on the inside wall) My dilemma is now weather...