Rubber Seal Performance

Natural rubber, as commonly referred to, is a solid substance produced from natural latex collected from rubber trees through coagulation, drying, and other processing steps. Natural rubber is a natural polymer compound primarily composed of polyisoprene, with the molecular formula (C5H8)n. Its rubber hydrocarbon (polyisoprene) content is over 90%, and it also contains small amounts of protein, fatty acids, sugars, and ash.

 

Physical properties of natural rubber: Natural rubber exhibits high elasticity and slight plasticity at room temperature, possessing high mechanical strength, low hysteresis loss, and low heat generation during repeated deformation, resulting in excellent flexural strength. Furthermore, as a non-polar rubber, it has good electrical insulation properties.

 

Rubber, along with plastics and fibers, is considered one of the three major synthetic materials, a polymer material with high extensibility and elasticity. The most prominent characteristics of rubber are its very low elastic modulus and high elongation. Secondly, it possesses good resistance to air permeability, resistance to various chemical media, and electrical insulation properties. Certain specialty synthetic rubbers possess excellent oil and temperature resistance, resisting swelling from fatty oils, lubricating oils, hydraulic oils, fuel oils, and solvent oils; their cold resistance reaches as low as -60°C to -80°C, and their heat resistance reaches as high as +180°C to +350°C. Rubber also resists various flexural and bending deformations due to its low hysteresis loss. A third characteristic of rubber is its ability to be blended, compounded, and combined with various materials for modification, resulting in excellent overall performance.