Help A Very unique problem

You must have a very, very skinny thumb. Check your local hardware store.

||hello || ||I have a duel channel tubing that has been punctured and cannot be sealed. ||This is what I was hoping you could help me fix this. I am looking for a ||part that is about the size length and diameter of your thumb that would ||fit watertight into a 3/8 polyurethane tube. On the other end, the part ||should have two nubs offset 90 degrees from the inlet that would allow me ||to connect two very skinny tubes. All connections should be made watertight ||and withstand some backpressure. I would rather not use metal if possible. ||I have seen this similar setup in the vacuum system in one of my ||automobiles but I am having trouble identifying the part.

Vacuum tee Rex in Fort Worth