Mechanical Properties of Metal Rubber Inner Core of O-Type Seal with Large Ring-To-Diameter Ratio: A Recent Study

In order to address the shortcomings of conventional rubber seals, such as high- and low-temperature resistance, easy aging, and inadequate load-bearing performance, O-type metal rubber seals with a large ring-to-diameter ratio were created using the cold stamping method and stainless steel wire as raw material. Heat treatment and porosity were investigated for their effects on the compression and tensile properties of test samples. It was discovered during uniaxial compression testing that the test sample exhibited typical hysteresis properties, and that the loss factor and energy dissipation of the sample with the same size but varied porosity increased with the reduction in porosity. The heat-treated sample's loss factor and energy dissipation were less than those of the untreated sample. As a result, energy dissipation and change of loss factor are both increased with decreasing porosity. Four samples with varying levels of porosity had their yield strength, ultimate tensile strength, and modulus of elasticity evaluated. It was discovered that the three metrics increased as porosity decreased. Additionally, as porosity decreased, the conductivity of the thermal treatment rose. The three aforementioned parameters were all typically raised. This demonstrated that metal rubber materials have good mechanical properties in high-temperature environments, effectively resolving the issue of ordinary rubbers' susceptibility to aging and failure under typical working conditions. This has significant engineering applications in both theory and practice.