Originally Posted by Bill_W
The Tough Guard does have a silicone ADBV, in fact it is the same as the Ultra Synthetic. The difference is it seats on that cardboard end and tube where the Ultra seats on the steel end cap. So we are not comparing apples to apples.
They should both seal well and work 100% if there isn't any problem causing them to leak. The spring in the dome end should put enough pressure on the guts to seal the center annulus of the ADBV regardless if it's up against a fiber or steel end cap.
The Tough Guard does have a silicone ADBV, in fact it is the same as the Ultra Synthetic. The difference is it seats on that cardboard end and tube where the Ultra seats on the steel end cap. So we are not comparing apples to apples.
They should both seal well and work 100% if there isn't any problem causing them to leak. The spring in the dome end should put enough pressure on the guts to seal the center annulus of the ADBV regardless if it's up against a fiber or steel end cap.