Is this good work?

[Deauukus]

I recently got a handyman/plumber to replace the matt black plug/ waste in the bathroom sink and am not necessarily happy with the aesthetics of the sealant work. Is this good work & what I should have expected or is this bad work. For reference the previous waste had no white sealant. The plumber knew in advance he was working with Matt black products.

This is the product that was installed: https://www.victorianplumbing.co.uk...-bottle-trap-pack?preSelected=true&sku=MBBWBT

 

[Wayners]

Some I've seen in the past use silicone or plumbers mate. Can get messy...
I'm no expert at these but I follow the instructions and if that was to be a problem I phone a product technical helpline

I've read instructions and it mentions silicone. Maybe black would of been better

 

[mattylad]

looks like too much reliance on silicone to me, AIUI the fitting is designed to go on without it.