well service swabbing oil saver rubbers

...Service Swabbing Oil Saver Equipment Accessories Rubber Saver Head Wiper This OSB oil saver rubber for wire sizes: 5/16" & 9/32" 7/32" Oil Saver rubbers provide a possitive seal on the wireline while retrieving the swab string from the tubing or casing of a well. this action contains the well pressure inside the tubing string. At the same time, it also can clean the wire line which ensures a cleaner and safetr site, oil...