New developed FKM combined oil seal has better oil sealing performance and higher reliability,and more improvement in temperature resistance,wear resistance,oil resistance,etc. ,and its bench test life can be up to 1 634 h.
s To prepare a hot oil resistant,elastic,high strength,rubber like and processable elastic material for oil sealing,NBR/CPE/EVA thermoplastic elastomer was prepared by dynamic vulcanization. The effects of rubber/plastics blending ratio,curing temperature and time on the gel content and mechanical properties of the prepared elastomer were discussed.
The paper designed the Pb- Sn base alloy of solder used for parts mending. The experiments simulated Harvest3motor crankshaft grease seal s performance at work was conducted. Some experiments for abrasion were taken on solders.
Through the analysis of the sealing mechanism of the supercharger oil seals and the test and comparison of the influence of different oil seals on the pressure in the back oil chamber, the paper designs a seal that uses a expansion ring with reverse threads, and selects a optimum combination.