O-ring 02050, EPDM A multi-application EPDM O-ring (size 02050) that turns up in several unrelated assemblies across different brands, handy to have on hand as a stock seal for grinder and drain plumbing repairs. SPECIFICATIONS Size: 02050; Material: EPDM COMPATIBILITY Fits: Fiorenzato grinder lower burr carrier disks; Brasilia drain box elbow; older La Marzocco GS/GS2 paddle valve assembly Replaces: SAB_48 INSTALLATION Simple DIY swap, seats onto the mating part by hand. PRO TIPS EPDM is the right O-ring compound for water and steam paths since it resists heat and mineral scale better than nitrile, if you're rebuilding an older La Marzocco GS/GS2 paddle valve, confirm you're getting EPDM (not a generic hardware-store NBR O-ring) or it will harden and leak within a season.