Final answer:
Polysulfide rubber, or mercaptan rubber, is composed of sulfur and natural rubber or related polymers. The addition of sulfur during vulcanization forms crosslinks between polymer chains, improving the rubber's strength and durability. This type of rubber is commonly used in tire manufacturing and coating electronic assemblies.
Step-by-step explanation:
Polysulfide rubber, also known as mercaptan rubber, is a type of rubber that contains sulfur as a key component in its composition. During the vulcanization process, sulfur is heated with natural rubber or related polymers to create a chemical reaction that forms crosslinks between polymer chains. These crosslinks enhance the durability and strength of the rubber, making it suitable for applications such as tire manufacturing and coating electronic assemblies.