Just replaced a Grohe flush valve in a customers toilet which was leaking. On examination of the old silicone seals, I find the silicone material had absorbed water producing blisters. As I can't resist popping a blister, I took a needle to them to confirm they did indeed contain water and not silicone oil. There is no evidence of chemicals being used in the cistern. I was wondering if anyone else had experience of this phenomenon?
Thanks for that Mr Brown. I just couldn't figure out how silicone can absorb water to the extent that blisters will form, and why this material should be used for seals in the first place? I await in anticipation for the reply from Grohe to my e-mail query.
P.S. Anyone know of an online source of these seals? It took me travelling to 8 plumbers merchants to find a new assembly.
@matty In that case, I hope both you and the bear (sic) are both equally happy. Will you be posting more of your bestial exploits on this forum ??
kinnel, 5 and 6 quid for a diaphragm. You could make 40 out of 1 rubble sack if you were a black belt in origami.
Blimey - that's the most expensive "rubber" I'll ever buy!! Thats what I thought when I looked at the washer for a Geberit impulse 260 valve £7.50? *** I'll try Geberit UK spares dept before placing an order elsewhere. DH
Geberit charge 5 pound postage and packaging plus vat on top, plus extra for next day delivery,so local merchant is probably still best place to go-if they,ve got them lol