Right it's a m8
Hes got a washer dryer , bought correct replacement water element which had died. So popped it out, new one in and tightened up and thought that was it.
Next thing it pops back out leaks everywere. Checks it and the gasket will not for love the money stay in place.
I did some scouring for him on the net and got him to send me pictures and I cant see any kind of spring come retaining clip inside the tub and it basically doesn't rattle about in the machine.
I thought there'd be something to hold the element in situe and lock it so when you tighten the gasket it doesnt keep popping back out like a cork bottle.
The picture shows 2 white plastic nogginssticking up just in front of the main drain hole.