Flame heater check valve o ring sizes

[USN_Green_Addict]

Decided to actually fix the flame heater check valve by replacing the O-Rings. I took the part to Napa and they couldn't match up the old ones with anything. I'm wanting to replace the two different size ones in the picture. If anyone has a source or a complete check valve for sale that would be awesome.

Sent from my LG-H918 using Tapatalk

 

[frank8003]

The next page in this TM gves the particulars of all the parts with NSN data. Goto Parts target with that seal data to find sizes of oring seals.