Sealing Functions

• Both rotating & non-rotating seals
• Seal drilling mud away from bearing lubricants
• Provide required pressure balance
• Critical to mud motor performance

Typical Seals

RM SEALS
– Fluid retention lips on the inside diameter which prevent the seal from spinning in the groove and reduce frictional heat
– Provide stable positioning for positive sealing at the outside diameter lip contact surface
– Activation slots which allow drilling mud to energize the sealing lip during pressure fluctuation

TYPE B POLYPAKS®
– Increased stability: helps prevent the seal from spinning in the groove
– Allows grease in relief groove to migrate to the shaft and full pressure across the seal
– Allows storage of grease and reduces high squeeze contact forces

COMPOSITE WEAR RINGS

O-RINGS / D-RINGS

MATERIALS