Suitable for: research laboratories for vulcanized rubber, compression seals, oil rings, O-rings, D-rings, V-rings, compression seals, and oil seals. Principle: Soak the vulcanized rubber sheet in liquid such as fuel oil, alcohol fuel additives, lubricants, etc. according to JIS-K-6258 and ISO1817. And check the changes in mass, volume, surface area, extract, hardness, and mechanical properties before and after the test piece. Technical data: Quality change rate: The change in weight of vulcanized rubber sheets in air before impregnation and after impregnation. Volume change rate: the change in volume of vulcanized rubber sheet before impregnation and after impregnation. Function: No need for tedious calculations, directly read the mass change rate and volume change rate of vulcanized rubber and oil seals. Adopting a large water tank design to reduce the error caused by the buoyancy of the suspension line. When using corrosive liquids as media, an anti-corrosion water tank can be purchased as an option. Specification: Model