The subject of installation represents an area commonly overlooked when selecting a radial shaft seal for application. Improper installation methods are a major cause of premature seal failure. The most expertly designed and manufactured seal will not function properly if the axial and radial alignment are not correct. Refer to Shaft and Housing Assembly on pages 23 and 24 for further discussion on proper alignment.
An installation tool should always be used when installing a radial shaft seal. The use of a tool improves ease of installation and reduces the possibility of seal cocking (non-perpendicular to shaft). A hydraulic or pneumatic press is advised to supply necessary force to install the seal.
When painting, be sure to mask the seal. Avoid getting paint on the lip or the shaft where the lip rides. If the paint is to be baked on or the mechanism otherwise subjected to heat, the seals should not be heated to temperatures higher than their materials can withstand. In cleaning or testing, do not subject seals to any fluids or pressures that could damage them. When in doubt, check the fluid compatibility section.