filler rod

基本解释

A valve body is connected with a tower cover through soft seal, and pressed by a bracket through a bolt. The valve rod, the tower cover and a gland are pressed and sealed by filler.
阀杆、塔型盖、格兰通过填料压紧密封，阀杆与执行机构通过固定于支架上的推力螺母实现上下运动。
ip.com
Rod-like NCC has perfect crystal structure, relatively high aspect ratio, low density and excellent mechanical properties which make it a new type of green reinforcing filler for rubber.
棒状NCC的结晶结构完善、长径比较大、密度低且具有优良的力学性能，可以作为绿色环保的新型橡胶补强填料。