Typically, a product that exhibits a constant failure rate follows what type of distribution for...

A product that exhibits a constant failure rate typically follows an exponential distribution for the failure rate. The exponential distribution is often used to model the time between failures in systems with a constant hazard rate, meaning the failure rate does not change over time.References:

Reliability Engineering by Elsayed A. Elsayed.

ASQ Quality Press: The Certified Reliability Engineer Handbook.