seal collar

基本解释

The import silica gel material seal packing collar, bears the aging not to distort, the life is long.
进口硅胶材料密封圈，耐老化不变形，寿命长。
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The hydro-cylinder is installed in the cylinder casing with small fitting clearance, which is sealed with a collar seal.
该蜗轮箱由蜗轮套及油缸两部分组成，油缸小间隙配合装配在缸套内，并用密封圈密封防漏。
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So the means cannot control leak the material, then possibly is the graphite pad or the copper collar wears (for example seal face not to be smooth seriously, gap big).
如此办法不能控制漏料，则可能是石墨垫或铜环磨损较严重（如密封端面不光滑，间隙大）。
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