Stock replacement part Rancilio Silvia Steam Valve Seat Seal.
13 x 4 x 4 mm FKM (Viton®) rubber. Also available in EPDM; rubber (not in the Classe series) for most other older Rancilio commercial steam, water, retention and expansion valves valves.
Suitable replacement for the Slayer part #46000-53100.
Attention CA Residents: Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.