Shaft seal special for RTO in oil industry

The utility model relates to a special shaft seal for RTO in the oil industry, which comprises a shaft sleeve fixedly connected with a box body, a gland is arranged at the outer end of the shaft sleeve, an oil seal is arranged at the outer end of the gland, the shaft sleeve, the gland and the oil seal are connected through bolts, an oil injection port is arranged on the oil seal, and the oil injection port is connected with the box body. A teflon packing ring I and a teflon packing ring II are arranged in a channel of the shaft sleeve, a bushing ring is arranged between the teflon packing ring I and the teflon packing ring II, a nitrogen port is arranged on the shaft sleeve corresponding to one end of the bushing ring, and a backflow groove is arranged on the shaft sleeve corresponding to the other end of the bushing ring. The utility model greatly improves the leakage effect and is reliable to use. 本实用新型涉及一种带油行业RTO专用轴封，它包括与箱体固定连接的轴套，在所述轴套外端设有压盖，在所述压盖外端设有油封，所述轴套、压盖和油封通过螺栓连接，在所述油封上设有注油口，在所述轴套的通道中设有四氟盘根环Ⅰ和四氟盘根环