A Wiper is a type of seal used to exclude contaminants from entering the cylinder. Besides direct wear to the rod seal, external contamination entering a hydraulic system can have disastrous consequences. Contaminated hydraulic fluid can quickly wear out seals, clog filters, and damage machined surfaces. However, a wiper can induce a pressure difference between the wiper and the main rod seal, which can cause either the wiper or rod seal to be ejected from its groove.
J Royal sells many different kinds of wipers, from relatively low pressure solid nitrile wipers, all the way up to heavy-duty metal clad ones. Many are also available in a wide variety of materials depending on the type of fluid or operating conditions the wiper experiences.
These wipers are designed to retrofit old MS-33675 grooves. They’re typically numbered for the MS-28776 design guide. More
D Wipers offer Improved performance without wiper gland modifications. J Royal offers four styles. More
A stainless steel spring energizes this wiper’s lip for heavy-duty applications and scraping environments. More
This wiper/rod seal combination can eliminate the need for both a rod seal and wiper, reducing costs. More