Final answer:
The working time of polysulfide rubber (mercaptan) is the amount of time it takes for the rubber to begin curing or hardening after it has been mixed.
Step-by-step explanation:
The working time of polysulfide rubber (mercaptan) is the amount of time it takes for the rubber to begin curing or hardening after it has been mixed.
The working time can vary depending on factors such as temperature, the specific composition of the rubber, and any additives or accelerators used.
Polysulfide rubber typically has a longer working time compared to other types of rubber, allowing for more flexibility in application.