OEE offers a full line of pistons for duplex and triplex mud pumps.
All API types are available. Among these are: Bonded Urethane Pistons and Pistons with replacement rubbers.
Here is a bonded urethane piston.
This one piece bonded constructed piston has no joints to leak.
But eliminates abrasive fluids between piston and liner.
The fluid expanded lip is not damaged by high pressure and fast pump strokes.
This Fail-Safe piston seals off to greater diameter as liner wears.