shower screen seal?

You could try warming up the seal in hot water, whilst doing that, apply a smear of washing up liquid to both sides of the glass where the seal was originally fitted, After leaving the seal to warm for a couple of mins, try refitting. The seal should be more pliable and should be easier to be refitted back onto the glass.

If not working, maybe try buying a replacement new seal. Try ebay.

Chris
February 2009