58mm silicone gasket 2pc pack for 9 series espresso machines ✔️ 2x 58mm silicone gaskets for 9 Series BES900/920/980/990 2-piece silicone gasket set designed for 9 Series machines, including BES900XL, BES920XL, BES980XL, and BES990. Outer diameter is approx 72mm (2.83"), inner diameter approx 48mm (1.89"), and the silicone material provides heat resistance for a reliable, leak-free seal. Easy to install and replace, it's ideal for home kitchens, cafés, and small offices that want consistent espresso extraction. ✅ outer Ø72mm (2.83") and inner Ø48mm (1.89") silicone gasket fits 9 Series ✅ Fits BES900XL BES920XL BES980XL BES990 and BSS1BUS1 models ✅ Heat resistant silicone provides durable, leak-free seal 💡 What is a 58mm silicone gasket used for in 9 Series espresso machines? This handy seal helps keep moisture out and ensures a tight brew for consistent results. - seals the group head to prevent leaks during extraction - resists heat to maintain stable temperature and pressure - easy to install into grooves for a tight, long-lasting seal