Choosing the right EPDM rubber strap can depend on several factors, including the application, environment, and required properties. Here are some factors to consider when selecting an EPDM rubber strap:Application: Consider the specific application for the EPDM rubber strap. Will it be used for industrial purposes or in a more general setting? The intended use will affect the necessary thickness, width, and overall durability of the strap.Temperature resistance: EPDM rubber is known for its excellent temperature resistance, with a high tolerance for both high and low temperatures. Consider the temperature range that the strap will be exposed to and choose an EPDM rubber strap that can withstand those temperatures.Chemical resistance: EPDM rubber is also highly resistant to chemicals, making it a good choice for applications where the strap will come into contact with chemicals, solvents, or acids. Consider the specific chemicals that the strap will be exposed to and choose an EPDM rubber strap that is resistant to those chemicals.UV resistance: EPDM rubber is also highly resistant to UV rays, making it a good choice for outdoor applications. Consider the amount of exposure to sunlight that the strap will have and choose an EPDM rubber strap that can withstand UV rays.Tensile strength: The tensile strength of an EPDM rubber strap is an important factor to consider, as it will affect the overall durability and load capacity of the strap. Consider the weight or load that the strap will need to support and choose an EPDM rubber strap with the appropriate tensile strength.Flexibility: EPDM rubber is known for its flexibility and ability to withstand repeated stretching and bending without cracking or tearing. Consider the flexibility requirements of the application and choose an EPDM rubber strap that can meet those needs.

Overall, choosing the right EPDM rubber strap will depend on the specific application and required properties, such as temperature and chemical resistance, UV resistance, tensile strength, and flexibility.Meanwhile,EPDM (Ethylene Propylene Diene Monomer) rubber is a synthetic elastomer that is made up of ethylene, propylene, and diene monomers. The chemical composition of EPDM rubber straps can vary slightly depending on the specific manufacturing process and additives used, but the basic composition typically includes:

Ethylene: Ethylene is a hydrocarbon gas that is used to produce the polymer chains that make up the EPDM rubber.Propylene: Propylene is another hydrocarbon gas that is used to produce the polymer chains in EPDM rubber. It provides additional flexibility and resilience to the material.Diene monomer: The diene monomer is added to the polymer chains to increase the number of double bonds, which enhances the material's ability to withstand high temperatures.Vulcanizing agents: Vulcanizing agents are added to the EPDM rubber to cross-link the polymer chains and increase the material's strength and durability.Processing aids: Processing aids are added to the EPDM rubber to aid in the manufacturing process and improve the material's properties, such as flexibility and heat resistance.Fillers: Fillers, such as carbon black or calcium carbonate, can be added to the EPDM rubber to improve its physical properties, such as stiffness and tensile strength.

Overall, the chemical composition of EPDM rubber straps includes a blend of ethylene, propylene, and diene monomers, along with various additives to enhance the material's properties. The resulting material is highly resistant to weathering, ozone, and UV rays, making it ideal for outdoor and industrial applications.