液压传动系统的辅件有:密封、油箱、滤油器、蓄能器、油管、管接头、冷却器、加热器等。一、密封密封的形式很多,按密封场合分有固定件、相对运动件、旋转件间的密封;按密封的型式有填料、活塞环、密封圈的密封等。为使密封效果好些,填料只用于密封轴端。活塞环只能用在活塞上,但近年来已广泛被制造容易、使用方便的密封圈所代替。新型的厌氧性粘合密封剂(厌氧胶),已开始用于液压系统管接头、泵和 Hydraulic transmission system accessories are: seals, fuel tanks, filters, accumulators, tubing, fittings, coolers, heaters and so on. First, a lot of forms of seal, according to the occasion of the seal has fixed parts, the relative movement of the rotating parts between the seal; by the seal type filler, piston rings, seals and other seals. For better sealing, the packing is only used to seal the shaft end. Piston rings can only be used on the piston, but in recent years has been widely used to create easy, easy to use seals instead. New anaerobic adhesive sealant (anaerobic adhesive), has begun to be used for hydraulic system fittings, pumps and