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由弹性材料制造的密封件,其应用范围取决于一系列因素,其中主要的是配合间隙和密封介质的压力。在径向间隙为0.10～0.15mm和工作液体的压力低于35兆帕时允许采用橡胶夹布皮碗加以密封。在压力更高的情况下要求安装几个皮碗。对于橡胶密封圈来说,在介质压力P_B<5兆帕时,间隙应当不超过0.18mm,而在压力P_B>10兆帕时,间隙值应减小到0.02mm以下。如果密封表面不均匀,个别部分的园度和曲率有偏差,那末,径向配合间隙实际上可达几毫米。例如,用来打开坚硬地方油井的压力装置就发现有这种情况。在沿着管道分段抽取
Seals made of elastic materials, the scope of application depends on a number of factors, the main one is to match the gap and sealing media pressure. Allows the use of rubber clamps and cups to seal when the radial clearance is 0.10 to 0.15 mm and the working fluid pressure is less than 35 MPa. In the case of higher pressure requires the installation of several cups. For rubber seals, the clearance should not exceed 0.18 mm at medium pressures P_B <5 MPa and should be reduced to less than 0.02 mm at pressures P_B> 10 MPa. If the sealing surface is not uniform, the individual sections of the garden and the curvature of the deviation, then the radial clearance with the actual up to a few millimeters. For example, this is the case with pressure devices used to open wells in hard places. In the pipe along the extraction