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2021
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O-ring's hardness measurement method
O-ring's hardness measurement method is as follows:
Measuring instrument
Measurement by micro hardness tester to complete, hardness tester should conform to GB/T6032-1985
"vulcanized rubber hardness determination (30-85IRHI) micro test method"
test specimen
1.The inner diameter of the standard sample is 14mm±0.17mm.The cross section diameter is 2.65mm±0.09mm, need 3 pieces
2.For O-rings with a cross section diameter of more than 6mm or an inner diameter of more than 30mm,
their segments can be cut and measured, and the results cannot be compared with the standard test results
3.Test procedures
Follow the test procedure of GB/T 6032
4.Test result representation:The measured results are 3. Take the middle digit and the whole digit
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