Long Life Elastomeric Aircraft Hydraulic Seals. Part III

摘要

Long life elastomeric hydraulic seals have been under development for a period of four and one-half years. One principle development was a compound that truly met the concept of a Type II system. Another accomplishment was the successful dynamic performance of fluorocarbon O-rings for at least 1000 hour service in two types of service. The major accomplishment of the last one and one-half years of development and evaluation was the successful 1000 hour rod seal performance of three nitrile compounds tested at 325 F. Other accomplishments during this later period concerned the performance of the backup system chosen for evaluations of O-rings above 275 F.