Master cylinder questions

Murray said
The bellows needs a small bracket to attach it to the back of the MC. With all that corrosion, you need to replace that MC.

I'm not sure what the Bracket is that you mention, Murray. This one just had a ridge on the wide end that slipped into a machined groove. It was REALLY soft though, almost like paper. I'm guessing there was some seepage of fluid that got into it?