M/C pressure bleeding adapter cap

[VitaminCRR]

I'm attempting to pressure bleed my brake system and wondering if there is an adapter cap for the 15/16" bore aluminum master cylinder that Dr. Diff sells. The caps that come on this unit don't seal very well. Any input?

 

[hunt2elk]

I'm attempting to pressure bleed my brake system and wondering if there is an adapter cap for the 15/16" bore aluminum master cylinder that Dr. Diff sells. The caps that come on this unit don't seal very well. Any input?

Mine have all leaked as well. Cass told me to buy replacements by Dorman. So far those have not leaked on me.

 

[hunt2elk]

Here are the numbers for the caps and seals that Cass recommends.

 

[VitaminCRR]

I'm wondering if these are going to leak when I put pressure in the master cylinder when bleeding the brakes.