Pac Brake Controller O-Ring

[Jacobs]

The vacuum valve on my E Brake sticks on occasion. I take it apart and clean the spool. At some point the o-ring that seals between the end cap and valve body will need replacement. The valve is a Numatics C11829 according to the tag but it is not a good number according to Numatics.



The o-ring is approx 1/32" cross section and 9/16"ID.



Anybody had any experience with these that can give me a source for a replacement?



Thanks



Bruce