??Commonly used three kinds of rubber gaskets Introduction

??Use of the valve, the general situation on the basis of having to replace the original with washers, commonly used in the washer so realistic, what does?

??For example: rubber ring, rubber O-rings, plastic flat washer, and of course there are other washers, where the first does not describe, first introduced three common washer.

??(1) rubber flat washer: Deformation simple, pressed when not difficult, but the pressure, temperature ability are poor, only for low pressure, high temperature is not local. Natural rubber has a certain acid function, use the temperature should not exceed 60 ?; neoprene ability also some acid, using temperature 80 ?; nitrile rubber oil, available to 80 ?; fluorine rubber features excellent corrosion resistance, Temperature function stronger than ordinary rubber, can be used in 150 ? medium.

??(2) a rubber O-ring: cross-sectional shape is a perfect circle, there is a certain self-tightening action, good sealing effect than the flat washers, pressing force is smaller.

??(3) plastic flat washer: Plastic is the most significant feature good corrosion resistance, most of the plastic temperature function is not good. PTFE plastic crown, not only features excellent corrosion resistance and temperature contrast broad scale, long use in the -180 ? ~ + 200 ? it.