Cylinder Liners - Sleeves, made of grey cast-iron, ought to have desired casting and machining qualities, viz. strength, toughness, hardness and wear resistance. These are mainly of two type - Dry liners and Wet liners. The liners-sleeves are 'Cast-In', force (press) fir or slip fit. The interference between its outer diameter and bore-hole walls depends on fit-type from 0.050 to 0.075mm. These are available in wide range suitable for light, medium and heavy duty application.