Brass tap body is leaking.

[Bp89]

I have attached an image of the brass body within a tap. Having replaced a cartridge which has cured a leaking tap, I can see that there is a small leak from the brass body which can be unscrewed.
Is there a seal behind the body?

Thanks.

 

[Timmy D]

Should have oring on cartridge creating a seal. Make sure tap threads are clean, lubricate cartridge oring and tighten.

 

[Bp89]

Thanks very much.

Should have oring on cartridge creating a seal. Make sure tap threads are clean, lubricate cartridge oring and tighten.