Wiggy333
I've used it many a time and it might be the only way apart from whacking the part in the misses chest freezer. Might need to convince her it needs a defrost. But seriously if you can't use heat then freezing is the only other way. It's not like you can press it out as its held by rubber. Thanks for the thought I really like it.
Spot on wiggy, and once you have left it in there for a couple of days pull it out and pour boiling water over it, the thermal shock usually helps to free the parts