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I have a slow-filling cistern and, having disassembled all the pipes inside I've identified a ripped seal. Assuming that I didn't cause that myself just a moment ago, I'm hopeful that replacing it will solve the problem.

Can you identify it?

Image of seal in my fingers, showing the tear Image of seal next to a 1p coin

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Is there a check valve involved? It looks like it may fit over a post – HerrBag Mar 19 '13 at 17:34
Ahhh a W.C. cistern, was imagining house sized cistern. – HerrBag Mar 19 '13 at 18:24
up vote 10 down vote accepted

It's a Torbeck Cistern Ball Valve Diaphragm Washer

enter image description here

FYI, I used google image search. I cropped the image and searched by image. I don't have an encyclopedic memory of seals.

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The force is strong with this one. – Chris Cudmore Mar 19 '13 at 18:34

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