How do these pans "seal" into cast iron collars

[WaterTight]

Do you use a pan connector or does it just sit inside and get sand and cemented?

Thanks

 

[gasmanrob]

Rapid set

 

[WaterTight]

How is easy is it to get the old one out? Just hammer and chisel it and try not to drop any bits down?

 

[gasmanrob]

It's a complete pig of a job!

Best way I've found is to tap the neck f the pan with a hammer remove the pan then block the soil pipe off with a bung or mop head on a bin bag to prevent bits falling in, knock the rest of the porcelain away then start on the cement. That's the difficult bit to do. I usually drill and stick it at 12 3 6 and 9 o'clock and try to get it out in 1/4s just try not to crack or snap the bell

 

[WaterTight]

Oh joy.