Ключевые слова:
2nd family gases, Quality control, Natural rubber, Tensile strength, Seals, Compression set, Lubricants, Temperature, 3rd family gases, Mechanical testing, Gas-powered devices, Infrared radiation, Grades (quality), Ageing (materials), Synthetic rubber, Gas-resistance tests, Spectrophotometry, Elongation at fracture, Mechanical components, Verification, Hardness, 1st family gases, Diaphragms (mechanical components), Test specimens, Ozone, Testing conditions, Chemical-resistance tests