Split Pump Seal
WHEN TO USE A SPLIT SEAL
Replacing a mechanical pump seal (component or cartridge) typically requires the disassembly of the pump. One way to avoid this cumbersome process is to use a split seal. Since the seal faces and other components are literally divided in half, they can be installed without pump disassembly. Split seals are typically used on mixers, large-volume and shafted pumps, and agitators.
COMMON SPLIT PUMP SEAL APPLICATIONS
BENEFITS OF USING SPLIT SEALS
- Less leakage than using traditional packing
- No wear on the shaft sleeve
- Maintenance free during operation
- Most Importantly, it saves time and money
SPLIT MECHANICAL SEAL DESIGN
A split mechanical seal is designed to be installed without disassembling the equipment. It consists of two segments, a stationary segment and a rotating segment, that are pre-assembled before installation. The stationary segment is typically installed on the equipment casing, while the rotating segment is installed on the equipment shaft.
Highlights of Split Pump Seal Design
SPLIT SEAL REPLACEMENT
Split seal replacements are commonly the most complex mechanical seals. For that reason, they are not always used over the existing OEM seals. Often, the replacement of these split seals is determined by the type of seal already used in the pump. The common problem is that the original seal being used may not be the best choice based on the fluid in the pumping process.
RUN TEST SPLIT SEALS
The complex design of a split seal and the necessary steps to assemble it add to the challenge of adequately installing these seals. In most pump processes, you can’t actually see the seal. Therefore, the only way you will truly know a seal is installed correctly is with run time. If best practices are followed during installation, it is difficult to determine if the seals are correctly installed until the pump is turned on.