Synthetic Polymer
Elastomeric compound composed of ethylene, propylene and a diene monomer that facilitates sulfur or peroxide vulcanization. Versatile applications for epdm include automotive weatherstripping, roofing membranes and industrial gaskets. It belongs to the M class of rubbers according to the classification system for saturated chain polymers.
The material is recognized for its ability to retain flexibility at low temperatures.
Oxidative Stability
Saturated backbones provide the polymer with exceptional resistance to ozone and ultraviolet radiation. This characteristic prevents the surface cracking and hardening often seen in natural rubber exposed to the atmosphere. Heat aging tests show that the material maintains its seal force for extended periods in outdoor environments.
Steam Performance
Excellent durability in hot water and steam makes this elastomer a preferred choice for heating systems and steam hoses. It functions effectively in polar solvents and various phosphate ester fluids. The low gas permeability of the compound supports its use in vacuum applications.
Fluid Limitation
Exposure to mineral oils, fuels or aromatic hydrocarbons causes rapid swelling and structural failure. The non polar nature of the polymer makes it vulnerable to absorption of these substances, which destroys the mechanical integrity of the component. Selecting the wrong grade for oil-wetted environments leads to catastrophic leakage.
Suitability must be verified against the specific lubricant or fluid present in the system.
