Posted by Mike / Wi on February 08, 2008 at 08:22:57 from (216.56.8.66):
I have a MF 220 Backhoe. I am rebuilding the boom swing cylinder. There are 4 o-rings that seal the 3"OD stainless steel rod. The max pressure is 2200psi. I have my choice of a 70 durometer or a 90 durometer o-ring. The 90 seems to be harder material. There are no specifications available from MF on what kind of o-ring to use. The size is a 3/16 X 3"ID. Any ideas on which one would be better for my application would be appreciated. Thanks in advance for your help.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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