My coffee machine sprung a leak and on investigation I found the o ring on top of the boiler (Krups thermoblock) had perished and I need to replace it. There is a channel on top of the boiler with ID of 39mm and OD of 44mm. the channel is 1.7mm deep. The boiler top plate is flat. I am no expert but think the ideal replacement should be ID 39.5mm with a CSA of about 2mm.
I found a selection of o rings at Altecweb.com but none seem to me to be an ideal fit. e.g.
ID 39.45 OD 44.4 CSA 1.78 ID 39.6 OD 44.4 CSA 2.4
Anybody know where I can get a silicon o ring the correct size. Would the39.6 ID o ring above be OK?