Characterising the friction coefficient between rubber O-rings and a rigid surface under extreme pressures

Previous research into the friction behaviour of elastomers has typically focused on effects velocity, contact pressure, counter surface and lubrication coefficient friction. O-ring type elastomer seals are common in many different industries. Friction plays a critical role during setting service these components. An experimental testing rig been developed that can measure sliding speed hydrostatic pressure Finite element analysis (FEA) packages adopt fixed coefficients or ones dependent. For latter case, dependence frictional is obtained from instantaneous stress response at any given then related to normal force response. The described this paper uses industry standard dimensions for gland, pre-compression levels, extrusion gap size rating. derived by dividing measured force, which was determined using an FEA modelling approach, as it could not be directly. Finally, relationship between velocity roughness order provide frequency dependent Coefficient (CoF) easily translatable surfaces.