02-16-2013, 05:58 AM
I got my o-rings from McMaster-Carr. Each valve takes two o-rings--a 9452K59 and a 9452K115. Put the numbers in the search box and it will give you each o-ring's specs.
http://www.mcmaster.com/#o-rings/=li3f84
http://www.mcmaster.com/#o-rings/=li3f84