The Russell 4AN flare cap threads over a -4 AN male fitting or hose end to seal it off. It is lightweight aluminum with a black anodized finish.
- Type: AN flare cap adapter fitting
- AN size: -4 AN
- Sealing: 37-degree AN flare
- Material: aluminum
- Finish: black anodized
- Part number: 661953
FAQ
What is the 661953 flare cap for?
It caps and seals a -4 AN male fitting or hose end that is not in use.
What is the difference between a cap and a plug?
A cap threads over a male end, while a plug seals into a female port.
What material is it?
It is aluminum with a black anodized finish.

