I would like to change the inlet on my mechanical pump from the push on barb type to an AN-6 Adapter. I see there is a copper washer and have read not to use pipe sealant. but to use loctite 243? Is this is a special fitting or will the AN Adapter with copper washer and loctite be sufficient? it appears the copper washer is where the seal occurs.

Any experience on the matter would be helpful I plan on using earls AN-6 adapter to what i believe to be 3/8 NPT.

thank you all..