@Rick Cameron - Festo cylinders are lubricated for life. In a washdown environment, the cylinder does not require additional lubrication if the piston rod is not extended during the washing process. If the rod is extended during the washing process, a lubricator could help extend the life of the seals. We also offer a special rod wiper seal, made of UHMW-PE, which has very low friction so it can operate without any lubrication even in a washdown environment. This may be preferable to lubricating since it does not require the regular maintenance of keeping a lubricator full of oil.

@@FestoNorthAmerica thanks for the reply. Will the part number for these wipers be in the dsnu catalog?

@RIck - The rod wiper seal that is suitable for use in wet and frequent washdown environments is denoted as -R85 for the DSNU cylinder. For DSNU, this is an option that is not documented in the standard product catalog and must be quoted by Festo customer service. We offer this rod seal as standard with our CRDSNU stainless steel cylinder, it is called -A3. CRDSNU is similar to DSNU but offers higher corrosion protection and a cleaner design. Feel free to contact us in North America for support, at technical.support.us@festo.com or +1 (800) 993-3786. Thanks!