This is the surface, the upper stationary seat sits against when installed. There should be an anti-rotation pin here to prevent the stationary seat from “slipping” & rotating during operation. If we repair this seal we will install a pin to prevent this from happening.
2″ double seal assembly with stationary seats & main housing. Seal unit was not hooked up to a barrier fluid loop during operation. The upper rotary seal o’ring is brittle which is due to high temps. acting upon the elastomer.
Both carbon rotary carbon seal faces are worn, need replacing. Rotary housings to clean up & polish. New springs & setcrews to install.