O-Ring OR 0114 EPDM

Not only a sight glass o-ring: where other manufactures use copper or paper seals, Nuova Simonelli use this o-ring to seal some metal fittings on their equipment, in addition to their sight glasses. For another example, the ECM (and others) use this as a seal for their steam wand spring seat.

ONLY THE OPTIMA MODEL USES THE S_48 AS A SIGHT GLASS GASKET! All other Simonelli models use this o-ring.