▎ 摘　　要

NOVELTY - Preparing low-temperature resistant sealing ring involves weighing 90-110 pts. wt. cold-resistant acrylic rubber, 20-30 pts. wt. reinforcing agent, 6-7 pts. wt. glass fiber, 3-5 pts. wt. paraffin oil, 3-6 pts. wt. zinc oxide, 2-4 pts. wt. sulfur, 1-2 pts. wt. accelerator and 1-2 pts. wt. antioxidant, adding cold-resistant acrylate rubber to the internal mixer at a temperature of 110-120 degrees C and speeding of 40-60r/minutes, banbury for 5-10 minutes, adding zinc oxide and continue banburying for 2-3 minutes. USE - Method for preparing low-temperature resistant sealing ring. ADVANTAGE - The method has good low temperature resistance, excellent mechanical property of the sealing ring and long service life. DETAILED DESCRIPTION - Preparing low-temperature resistant sealing ring involves weighing 90-110 pts. wt. cold-resistant acrylic rubber, 20-30 pts. wt. reinforcing agent, 6-7 pts. wt. glass fiber, 3-5 pts. wt. paraffin oil, 3-6 pts. wt. zinc oxide, 2-4 pts. wt. sulfur, 1-2 pts. wt. accelerator and 1-2 pts. wt. antioxidant, adding cold-resistant acrylate rubber to the internal mixer at a temperature of 110-120 degrees C and speeding of 40-60r/minutes, banbury for 5-10 minutes, adding zinc oxide and continue banburying for 2-3 minutes, then adding accelerator and antioxidant to continue banburying for 2-3 minutes, then adding glass fiber and paraffin oil to continue banburying for 2-3 minutes, then adding reinforcing agent to continue banburying for 10-20 minutes, discharging, cooling for 3-5 hours to obtain rubber compound, placing the rubber material into the open mill, adding sulfur when the rubber material is wrapped in rolls, and passing 5-7 times at a temperature of 50-70 degrees C and a rotation speed of 20-30r/minutes to obtain film, cutting the film into rubber strips, placing the rubber strips into the seal ring mold, placing the mold into the plate vulcanizing machine, vulcanizing for 8-10 minutes under the conditions of a vulcanization temperature of 170 degrees C and a vulcanization pressure of 10 megaPascal and trimming to obtain product.