superih Posted March 20, 2019 Share Posted March 20, 2019 The orings that seal the shafts, number 4 in the pic, should these be 70 or 90 durometer? Usually any orings in hydraulic systems are 90, but the original ones i pulled out feel soft like 70 durometer, just wondering if they feel soft because they are 74 years old or do you think they should be 70 durometer? Link to comment Share on other sites More sharing options...
cbfarmall Posted March 20, 2019 Share Posted March 20, 2019 When I was searching out orings for my 450, I recall the online parts list having the durometer hardness specified in the description of the part number. Check that. Link to comment Share on other sites More sharing options...
superih Posted March 20, 2019 Author Share Posted March 20, 2019 4 hours ago, cbfarmall said: When I was searching out orings for my 450, I recall the online parts list having the durometer hardness specified in the description of the part number. Check that. I looked it up under Farmall 450 and it does say that 70 durometer was used, thanks. Link to comment Share on other sites More sharing options...
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