Self-lubricated Series S99PS3 and S99PS4 include Frelon lined plain and flanged sleeve bearings that can tolerate up to 1,500 psi over portion of bearing carrying load. Frelon liner material replaces oilite and plastic materials and is impervious to most industrial chemicals and acids. Available in inch sizes to fit shafts ranging from 3/16-¾ in. diameter, bearings range in length from .25-1.00 in. with ODs from 5/16-1 in.