Rancilio Steam Wand O-ring – Viton Viton O-ring for the Rancilio steam wand, sealing the nut against the ball joint below the steam ball. Rancilio's stock o-ring here is EPDM; this Viton version offers better long-term heat and steam resistance in the same dimensions. SPECIFICATIONS 2.62 mm thick x 11.91 mm inside diameter (OR 0115) Viton construction (same spec as Nuova Simonelli S_260, made in EPDM) COMPATIBILITY Fits: Rancilio and Magister steam wands, sight glasses, and the Gaggia Deco steam wand spring seat Replaces: Rancilio #36404001; also cross-references to Bezzera, Gaggia, Lavazza, Nuova Simonelli, RDL, Saeco, and Spaziale part numbers of the same OR 0115 spec Works with: group flange applications on Conti machines and a range of La Spaziale hydraulic assemblies INSTALLATION Quick DIY replacement, lightly lubricate before seating to avoid pinching during install. PRO TIPS If your steam wand ball joint feels stiff or weeps steam at the collar even after replacing the ball seat, this o-ring, not the ball itself, is usually the actual failure point since it's the softer, more heat-exposed component. Because this OR 0115 size is used across many brands' hydraulics (Spaziale, Magister, Gaggia Deco, Conti group flanges), keep a couple on hand if you service mixed equipment, it's one of the most universal wear parts in the shop.