Usage Tips:54mm Silicone Ring, 3pack Grouphead Gasket For Espresso Machine 878/870/860/840/810/500/450/ Sage 5 Combination gasket for espresso machines 870/878/880/860/840/810/450/500/ Sage 500/810/870/875/878/880For /Ageespresso coffee machine, compatible silica gasket is made of food silica , free of bisphenol A, easy to disassemble and install, and more resistant to high temperature than rubber gasket. It can handle temperatures as low as - 65 F/54 C to as high as 450 F/230 C. sealing - 54mm silicone ring fits perfectly with the / coffee machine. The soft silicone can be easily inserted into the groove to form a and seal, ensuring no water escapes, while minimizing the replacement frequency.Colour:Photo ColorMaterial:Silica Contents:3 x Silicone RingOnly the above content, other are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.