Life Prediction of Rubber O-shaped Sealing Ring with Accelerated Aging Method
Taking nitrile rubber O-shaped sealing ring(referred to as rubber O-shaped ring)as an example,a new method for life prediction of the rubber O-shaped ring by accelerated aging was proposed.Using the compression stress relaxation performance retention rate as the index for predicting the storage life,the compression stress relaxation tests of the rubber O-shaped ring were conducted at 80,100,110 and 120℃,respectively.The compression stress relaxation retention rates of the rubber O-shaped ring stored for 3,5,10,15 and 20 years were firstly calculated,and then the acceleration aging time required for the rubber O-shaped ring stored for 3,5,10,15 and 20 years at 80 and 100℃ was calculated.
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