1-Pack 54mm Silicone Steam Gasket for Breville 8 Series ✔️ ID 50 mm (1.97 in), OD 64 mm (2.53 in), 1-pack, quick leak-free seal Replacement silicone gasket for Breville 8 Series group heads, a handy seal that tightens the fit and preserves pressure for consistent espresso. It fits 54mm group heads across models like 878, 870, 860, 880, 810, 840, 450, 500, making it ideal for home setups and small cafés. ✅ 54mm silicone gasket for 8-series Breville group head ✅ Inner diameter 50 mm, outer diameter 64 mm for precise fit ✅ One-piece design for quick replacement ✅ Heat-resistant silicone resists deformation under brewing heat ✅ Smooth surface to prevent scratching of the group head ✅ Easy tool-free installation, press until snug ✅ Compatible with 878, 870, 860, 880, 810, 840, 450, 500 models 💡 What is a 54mm silicone gasket used for in espresso machines? This handy seal keeps water from leaking and maintains proper pressure during extraction. - Keeps leaks under control and ensures consistent extraction - Silicone’s heat resistance helps it last through many brews - Simple, tool-free installation for quick maintenance - Fits 54mm group heads, including Breville 8 Series