The flygt pump seal is designed with the upper seal and lower seal. By using the Tunsten carbide, Tungsten carbide, and viton, the upper and the lower of the seal can be fitted smoothly, which ensures low leakage rates. When being operated in a controlled environment, the upper seal offers very high resistance. As for the lower seal, it features sturdy design and should be able to cope with fibrous clogging matter, hard abrasive particles, and chemically aggressive media, etc.