Need help identifying a replacement plumbing part

[Drennen7]

Hi All,
I must have had some residual water in the line to the shower knobs. Went to summerize and found a leak.
Looking for a link or the name of the black plastic elbow that appears to thread onto the back of the knob valve and has a barbed connection the PEX side with a crimp fitting.
It seems to have a pretty thick white plastic washer inside the connector and a small metal ring in there as well?
Thanks in advance...

Randy

[JRTJH]

This is one time when a picture is worth a thousand words.... There are many " black plastic elbow that appears to thread onto the back of the knob valve and has a barbed connection the PEX side with a crimp fitting." Are you asking about a part for the shower, the city water connection, the bypass valve for the water heater or ???????

[chuckster57]

Sounds like a 90 degree elbow. The plastic washer is probably a “cone” washer and the metal ring is probably a cinch clamp.

Any large home improvement store will
Have the fitting your looking for. There are crimp
Rings, two different styles and also “shark bite” makes the fitting with a “nut” that locks the pex onto the fitting.