Flyshop 10 pcs black rubber grommet kit o ring gasket 3 od 2 8 id 0 1 width 76 3 x71 x2 65 mm.
Lens rubber ring white.
I don t use the lens that much so it stays in the bags most of the time.
Our cleaner can preserve the rubber grips of your precious cameras and lenses.
Simply swipe the cleaner tip on the oxidised or molded rubber the white cleansing fluid will rejuvenate the rubber in just a few seconds.
It s about 4 years old and i bought it new from amazon.
The cleaner removes white bloom oxidation and fungus.
Noticed if i rub with my hand the white comes of but its hard get in the groves.
I ve noticed some of my less used lenses are have the rubber on the focus and zoom ring turn white ish.
The rubber on my 70 200 turn white and it looks ugly.
Best was to return them to black.
The rubber on focus ring is fine.