Foam Washer and Plastic Backnut. There is no waste rubber seal washer.
Wirquin Brass Basin Waste Anti Vandal Plug, Slotted 3012609 (1.25")
Balterley Basin Waste with Brass Plug & Ball Chain, Slotted Basin Waste, Traditional Wastes for Bathroom Basins, Stainless Steel Bathroom Sink Wastes, Slotted for Overflow - 60 x 60 x 88mm (Chrome)
Mura Brushed Bronze Mono Basin Mixer | Mono Basin Mixer | Bathroom Sink Tap | Brushed Bronze Finish | Inc Slotted Basin Waste | Single Hole Deck Mounted Installation
Peppermint Bath and Basin Mixer Taps Set with Pop up Slotted Basin Waste Matte Black Waterfall Bathroom Sink Tap & Bathtub Filler Tap Tub Faucet Cloakroom Mono Brass Deck Mount
VeeBath Ideal Slotted Basin Waste Full Dome, Pop-Up Basin Waste, Modern Waste for Bathroom Sink with Click Clack Function, Brushed Brass
VeeBath Ideal Slotted Basin Waste Full Dome, Pop-Up Basin Waste, Modern Waste for Bathroom Sink with Click Clack Function, Matt Black
