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 part number 3656637 is a double-acting industrial component featuring a profile barrel structural design with a piston and a single-end piston rod with an M20x1.5 external thread. Operating within a pressure range of 0.04 MPa to 1.2 MPa and an ambient temperature range of -20 °C to 80 °C, this unit conforms to ISO 15552 and delivers a theoretical retraction force of 2721 N at 6 bar. It is equipped with adjustable pneumatic cushioning at both ends, position sensing via proximity switch, and a 70 mm stroke with an 80 mm piston diameter. Submit the exact part number, quantity, and application requirements for 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 3656637. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.