Can't remember quite which, but I bought a kit of 'O' ring spares a
wee while back on the basis that these might be useful sometime.

'Sometime' arrived yesterday when I finally surcumbed to pressure from
HID to do something about the dreadful SCART cable that keeps on
drifting out of connection on the back of the TV. Two screws as
clipping points and a large 'O' ring over the SCART plug - now why
couldn't Panasonic have thought of that ?

Rob