High Chrome Sleeve Liner
The outer hull, or body, of the liner is a high strength forging. Premium uses forgings exclusively to ensure the consistent quality. The sleeve is centrifugally cast in the Premium facilities by skilled craftsmen. It has the maximum amount of chrome for the base metal and Premium adds molybdenum to increase the hardness depth. The sleeve is then inserted into the hull at a tightness that exceeds its counterparts. The liner is rated to match the pressure rating of the pump per liner size.
 
Rated for all drilling operations up to 5,000 PSI and above
Bore hardness is 62 - 69 Rockwell
Plip design to prevent inner sleeve slippage
Extremely long service life