Dairymaster DMS/DM5 Vacuum Pump Shaft Oil Seals (Pack of 2) The Dairymaster DMS/DM5 Vacuum Pump Shaft Oil Seals (Pack of 2) are genuine replacement oil seals designed specifically for use in Dairymaster DMS and DM5 vacuum pumps . These seals play a vital role in preventing oil leakage along the rotating shaft, helping maintain correct lubrication inside the pump and protect internal components from wear and contamination. Oil seals are essential for maintaining vacuum pump integrity . They help keep oil where it’s needed most — around bearings and moving parts — and prevent oil from escaping into the vacuum chamber or onto surrounding equipment. Over time, seals can harden, crack, or deteriorate due to heat, age, and regular use. Replacing worn or damaged seals as part of routine servicing helps restore correct oil retention and supports smooth, efficient pump operation. The Dairymaster DMS/DM5 Vacuum Pump Shaft Oil Seals (Pack of 2) are supplied as a pair, providing one seal for each end of the vacuum pump shaft where required. This pack is ideal for planned maintenance schedules, servicing, or repairs where visible leakage or reduced oil levels indicate seal wear. For correct com