"This product is part of the Harmony XB5 range, an offer of Ø 22mm modular plastic pushbuttons, switches, and pilot lights." "This liquid spray protective washer is used for insertion beneath head." "It is available in chromium plated color." "It is ideal for food and beverages, chemical industry, paper mill and marine applications. It is also suitable for the service sector and infrastructure applications." "It is compatible with ZB4F and ZB5F pushbuttons." "It is sold in 10 per indivisible quantity." "Harmony delivers an innovative and ergonomic design that improves the reliability of panels, machines and processes." "The modular range of Ø 22mm metal control and signaling units combines simplicity of installation, modern standard and flush mounted design."