Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
The Festo 573921 industrial component features bipolar reverse polarity protection, spark arresting, and an LED signal status display operating at nominal voltages of 12 V and 24 V DC. Constructed with a black PA housing, EPDM seals, and a CRC 2 moderate corrosion resistance class rating, this 3.2 g unit achieves an IP65 degree of protection and mounts onto an air solenoid valve using a self-tapping screw at a maximum tightening torque of 0.27 Nm. It operates within an ambient temperature range of -5 °C to 60 °C in any mounting position and complies with RoHS and VDMA24364-B2-L LABS standards. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 573921. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.