Ideal Standard E911706NU Gasket - tap Body to Bath 

if you would like to purchase a gasket that has a small crease from storage for £5 LESS please copy this number into the ebay search bar  285996167019

suitable for bath /bath mixer taps

ceraplan 
ceramix 
vectis 
alto 
sandringham 

length 230mm
width 50mm 
thickness 3mm
holes  27.5mm