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乌克兰燃气工业联合企业的捷尔诺波利与别尔季切夫压缩机站首次应用压缩机气缸塑料密封件。采用卡普隆制造这些零件,其中包括活塞环与填料环。 卡普隆活塞环在结构上与金属活塞环无差别,由热压机压铸制成。热处理（水中煮沸）后即可使用,不再机械加工。 制造活塞杆的填料需采用较复杂的工艺,因铸成后在端面上形成收缩凹穴。因此压铸时留有余量,经机械加工获所需尺寸。
The compressor cylinder plastic seals are the first to be applied to the Ternopilou and Bechtičvik compressor stations at the Ukrainian gas conglomerate. Kapron makes these parts, including piston rings and packing rings. Kapron piston rings are structurally identical to metal piston rings and die-cast by a hot press. Heat treatment (boiling water) can be used, no longer mechanical processing. The manufacture of piston rod filler to be used more complex process, because after casting into the shrinkage cavity in the end surface. Therefore, leaving a margin when die-casting, the required size by mechanical processing.