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Europa-List: O-Ring for Classic Brake

Subject: Europa-List: O-Ring for Classic Brake
From: italianjon <jon.catilli@gmail.com>
Date: Thu, 20 Jun 2019 07:34:39

Hi All,

Does anyone know an alternative part number for the large O-Ring in the Classic
brake caliper.

I found a post on here, from Jim and Heather, from 20/05/12 which said that it 
appears to be a Cleveland 101-05200. This P/N maps on to MS28775-224 with an ID 
of 1-3/4" and thickness 1/8". Converting this to metric it's 44.45mm ID and 
3.175 thickness. I found HUG-Technik 42704450300 which has 44.5mm ID and 3.00mm 
thickness - but this is grossly off. The ID is far far too big. (link : 
https://www.hug-technik.com/shop/advanced_search_result.php?categories_id=0&keywords=42704450300&inc_subcat=1)

Because I discovered this during the overhaul of the brake system, I am now 
without
a working brake! However, I measured the piston, and see that I need an ID
closer to 39mm.

The closest I can find from my O-Ring sources here, is Hug-Technik 42703900400 
(link : 
https://www.hug-technik.com/shop/advanced_search_result.php?categories_id=0&keywords=42703900400&inc_subcat=1)
 with an ID of 39.00 mm but a thickness of 4.00mm... I did order it to see, but 
the piston will not go back inside the caliper housing.

Best

Jon


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=489751#489751



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