Operating Conditions: Pressure: 0~0.7MPa Temperature: 0~180 degree Speed: less than 3000r/min Medium: Aluminum industry, powder metallurgy, sewerage, mining and slurry, etc. Product material: stainless steel (304, 316, 2205), rubber (viton, NBR, HNBR, EPDM), graphite, carbon. Design/Structure 1. Butterfly seal ring compensates the abrasion of rotary seal and adjusts the perpendicularity error between rotary seal and shaft. 2. Wide flow channel in the seal cavity against blocking 3. Spring force can be regulated by the fixed screws on the end of the bush. 4. Excellent wear-resistant friction pairs 5. Simple structure and easy for installation 6. No need to washing for seal.