Everyone knows about the Viton o-ring replacement option to allow Cleveland calipers to withstand higher temperatures without leakage. Recall you can use ordinary red hydraulic fluids with Viton, MIL-H5605 (standard) or MIL-H83282 (high temperature), thus it is an easy seal swap.
The only issue with standard Viton has been a slightly reduced low temperature limit as compared to nitrile o-rings. A standard Viton o-ring isn't as flexible as nitrile rubber at very low temperatures.
Today I was poking around and ran across a source for Viton o-rings in "GLT" compound. GLT was developed to address the low end temperature limitation, and is rated -40C to +200C.
Never can tell when you might fly the Arctic, so here's the source:
http://www.oringsusa.com/catalog/index.php
In the "Military and Aerospace" block click "Military Viton GLT", then scroll to "M83485/1-218", which should fit the Cleveland caliper.
The only issue with standard Viton has been a slightly reduced low temperature limit as compared to nitrile o-rings. A standard Viton o-ring isn't as flexible as nitrile rubber at very low temperatures.
Today I was poking around and ran across a source for Viton o-rings in "GLT" compound. GLT was developed to address the low end temperature limitation, and is rated -40C to +200C.
Never can tell when you might fly the Arctic, so here's the source:
http://www.oringsusa.com/catalog/index.php
In the "Military and Aerospace" block click "Military Viton GLT", then scroll to "M83485/1-218", which should fit the Cleveland caliper.