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 539721 is a 26 mm industrial component built on the ISO 15407-2 norm with a die-cast aluminum housing weighing 217 g. It operates at pressures from -0.09 MPa to 1 MPa using compressed air per ISO 8573-1:2010 [7:4:4] and permits oil lubrication. Featuring IP65 and NEMA 4 degrees of protection, a 0 corrosion resistance class, and through-hole mounting, this unit functions in ambient temperatures between -5 °C and 50 °C in any mounting position. Submit the exact part number, quantity, and application requirements to receive a quote.
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 539721. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.