A conventional shaft stuffing box may have all of the following components EXCEPT:

In a conventional shaft stuffing box, lip seals are not a typical component. Stuffing boxes traditionally utilize materials like flax packing, which is a braided fiber that creates a seal around the shaft as it rotates, preventing water from entering the boat.

Locknuts are also standard, serving to secure the packing in place, while left-handed threads may be present depending on the design and the direction of rotation of the shaft.

Lip seals, however, are generally associated with different seal systems that provide a dynamic sealing solution, often used in applications with more sophisticated sealing needs. They are specifically designed to accommodate rotary motion with a different mechanism than that found in a conventional packing arrangement, which relies on compression rather than the sealing action of a lip. Therefore, the absence of lip seals in a conventional shaft stuffing box is what makes this answer correct.