Question 136Refrigeration & AC - 1st Asst/Chief

The correct answer is C) spring. The carbon seal ring of a refrigeration compressor crankshaft mechanical seal is held in position against the stationary ring face by a spring. The spring provides the necessary force to keep the carbon seal ring pressed against the stationary ring face, ensuring a tight seal and preventing refrigerant leakage. The other answer choices are incorrect because: A) a snap ring is used to hold other components in place, not specifically the carbon seal ring; B) a woodruff key is used to transmit rotational force, not to hold the carbon seal ring; and D) a thrust washer is used to support axial loads, not to hold the carbon seal ring in position.