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Author Topic: O-ring sizing question  (Read 679 times)

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Offline Owned

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O-ring sizing question
« on: May 29, 2012, 12:06:57 PM »
When the factory parts manual provides o-ring size, is it an ID measurement x cross section?  Or, OD x cross section?

EX:  45x3mm  Is the 45 ID or OD?

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Offline Bodi

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Re: O-ring sizing question
« Reply #1 on: May 29, 2012, 12:10:17 PM »
In theory the spec is always for the inside diameter. I doubt if metric ones would be different, but they drive on the left in Japan...
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Offline mono

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Re: O-ring sizing question
« Reply #2 on: May 29, 2012, 12:13:17 PM »
agreed - as far as i know it's I.D. x thickness
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Offline Owned

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Re: O-ring sizing question
« Reply #3 on: May 29, 2012, 12:22:09 PM »
Thanks all!  I'm building up a 160 from the grave.  Many o-rings were missing from the Engine/Oil Seal kit.
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'01 Ducati 900ssie
'74 Honda CB350F
http://www.flickr.com/photos/indyrider/sets/72157619944545142/show/
'73 Honda CB350/400F Hybrid
http://s1231.photobucket.com/albums/ee520/indyrider2/?albumview=slideshow
'64 Honda CB160 Soon to be unveiled!
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