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 156691 is a double-acting industrial component featuring a 20 mm piston diameter, a 30 mm stroke, and a square piston rod that provides integrated protection against torsion. Designed with a piston rod at one end and internal threading on the rod end, this unit operates within a pressure range of 1 bar to 10 bar (14.5 psi to 145 psi) utilizing compressed air as per ISO 8573-1:2010 [7:4:4]. It incorporates elastic cushioning rings at both ends, position sensing capabilities for proximity sensors, and can be installed in any mounting position while delivering a theoretical force of 188 N advancing and 141 N retracting at 6 bar. 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 156691. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.