Spring reinforced oil seals are generally installed with the tail or lip of the seal facing __________. GS-0152

Correct Answer: Option D — toward the oil pressure being sealed

Spring-reinforced oil seals must be installed with the sealing lip facing the pressurized fluid. The fluid pressure acts against the lip, forcing it tighter against the shaft to prevent leakage. Installing the lip away from the pressure would allow the fluid to bypass the seal, leading to failure.