Oil and mechanical seals

Oil seals keep lubricant in and dirt out where a shaft leaves a housing; mechanical seals seal rotating pump shafts. Most oil seals can be matched from three sizes (shaft, bore and width) plus the lip style and material, even when the part number is gone.

Common types

• Single- and double-lip oil seals
• Nitrile, Viton and high-temperature compounds
• Metal-case and rubber-covered seals
• Split seals for large shafts
• Pump mechanical seals

Where they’re used

• Gearboxes and reducers
• Electric motors
• Pumps and mixers
• Hydraulic equipment