Abstract
An abrasive wear test machine was built to study the friction and wear resistance of O-ring materials. In this test machine, two O-ring segments are held against a rotating roughened metal disc. The disc and the O-ring specimens are submerged in an abrasive fluid (drilling mud). The roughened disc surface draws the abrasive particles between the O-ring and the disc surface to produce three-body abrasive wear. Wear occurs on both the specimen and the disc. The wear of the O-ring specimen is determined by weight loss measurements. By careful design of the disc and selection of the test conditions, wear surface similarity was obtained between machine-tested O-rings and O-rings used in field-operated equipment. The testing machine is described, preliminary wear results are presented and photographs of field-worn and machine-worn specimens are shown for three materials.
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