A Comparative Evaluation of Square VS Round Cross-Section Circular Seals Using Stress Relaxation Data to Predict the Useful Life of a Seal 790351

Nitrile, silicone and fluorocarbon polymers were evaluated in square and round cross-section rings using stress relaxation to determine retained sealing force under static conditions at elevated temperatures. Stress-relaxation data were combined with a stress-decay formulation to predict the life of the seals while examining the effect that squeeze, cross-sectional shape, and state of cure have on performance.
Regardless of material used, square cross-section rings exert a greater sealing force than their round counterparts for a longer time period. This improvement in seal life is due to cross-sectional shape and state of cure.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.