Uses: HY3840 rubber compression tester main by the parallel plates, limiters and fasteners, used vulcanized rubber, thermoplastic rubber or foam at normal, high and low temperature conditions, a constant compression ratio, compression time by a certain Determination of the amount of deformation of rubber. Executive Standard: GB7759, ISO815 and other related standards; technical parameters: Instrument Model HY3840 sample size Type A: Diameter 29mm Height 12.5mm B Type: Diameter 13mm Height 6.3mm height limiter type AB sample compression ratio 25% mm 9.3 ~ 9.4 4.7 ~ 4.8 compression ratio 15% mm 10.6 ~ 10.7 5.3 ~ 5.4 compression ratio 10% mm 11.25 ~ 11.3 5.65 ~ 5.7 Dimensions Diameter 115mm Height approx 110mm Weight 10kg