O-Rings - rubber

General principlesFunction, design, norms and standards.MaterialsClassification of elastomers, standard compounds, physical characteristics, chemical resistance, tear and wear, resistance, electrical characteristics, standard compounds - chemical resistance.UseEnvironment, fluid contact consequences, extreme temperature conditions, pressure-vacuum, food compatibility, medical compatibility.ApplicationsStatic or dynamic applications, dimensioning, gland, squeeze and extension, back-up, surface finish, relative speeds, assembly.