I have a 1″ sprinkler system that has a difficult connection. I estimate that something like 1/8 to 1/4 inch of pipe is inside a 45 elbow joint. I have loaded it with pvc glue, but I would like to know if there is any kind of sealer or glue that could be placed at the intersection of the pipe and the elbow to give added strength. The system operates at about 100 psi and this joint is on the input side, thus under pressure all the time. Appreciate any advice.