Reversion in a sulfur-cured compound involves a loss of effective network structure during excessive heat exposure. Its extent depends on the polymer, cure formulation and time-temperature history.
The crosslink structure matters, but sulfur content alone does not specify the result. Different cure systems must be compared using identified formulations and consistent test conditions. A particular processing temperature is not a universal guarantee against reversion.
Use cure data and finished-part requirements to establish the process window. Monitor temperature and time, and investigate departures from the approved cycle. Confirm that any formulation change still meets mechanical, dimensional and service requirements. Heat degradation in other elastomer systems should be evaluated separately rather than dismissed because the cure is not sulfur-based.
