Conductive Seals from Parker Hannifin
When unprotected electrical currents flow through the bearings, the currents can cause issues such as arcing, pitting, fluting, and frosting, damaging the bearings and degrading the reliability and longevity of your motor. These stray currents lead to issues such as noise, vibration, higher temperatures, and ultimately, premature failure. Traditional solutions include shaft grounding blocks, carbon fiber grounding rings, and ceramic insulated bearings. However, these solutions often have limitations, including restricted grounding surface area, the need for additional hardware for installation, or high costs.
Parker’s conductive seals eliminates the need for a secondary solution by combining a shunt and a seal in one. This seal maximizes discharge for VFD-induced voltage through 360-degree contact around the shaft. Requiring no hardware, its easy to install and inspect. Available in both PTFE and elastomeric materials, this seal protects bearings and the motor from contaminants while allowing lubricants to reach the bearings if needed.
Features & Benefits of Conductive Seals:
- High electrical conductivity close to bearing
- Continuous 360-degree contact
- Optimized sealing performance in both dry and lubricated conditions
- Available in both PTFE and elastomeric materials
- Elastomeric seals available in Parker oil seal profiles
- PTFE seals available in standard FlexiSeal profiles
- Seals can be incorporated within the bearing or on the shaft adjacent to the bearing
Material Selection for Conductive Bearing Seals:
Parker's conductive bearing seals are available in both elastomeric and PTFE versions.
Elastomers
- Suitable for low-speed applications
- Conductive FKM
- Easily replaces a standard oil seal
PTFE
- Good mechanical properties
- High temperature resistance
- Excellent chemical resistance
- Low wear rate
Looking for bearing seals to help with your electrical current sealing needs? Contact us today to talk.
