Test Background
The purpose of the non-metallic gasket material sealing test is to determine the sealing performance of plate-shaped and solid on-site formed gasket materials at room temperature. It can be used to compare the sealing performance of gasket materials under controlled conditions and give accurate leakage rate values.
Zhongke Testing Reliability Experiment Center has the capability to test the reliability performance of various non-metallic gasket materials, and provides professional reliability testing services such as sealing test, tensile strength test, softness test, compression rate rebound rate test and other non-metallic gasket materials.
Test method
Test method A is limited to liquid leakage rate measurements and uses a compression device through which external loads are introduced into the flange to generate a compression force on the gasket specimen.
Test method B can be used to measure the leakage rate of both liquid and gas media. Another compression device is used. The flange is placed in the middle of a frame composed of four bolts. Different compression forces are applied to the flange through it. The pressure value is measured by a pressure sensor installed in it.
The sealing performance test results are expressed in terms of leakage rate, that is, the number of milliliters leaked by the sample per hour under specified test conditions.
Test standard:
GB/T 20671.4-2006 Non-metallic gasket material classification system and test methods Part 4: Gasket material sealing test method
GB/T 20671.5-2020 Non-metallic gasket material classification system and test methods Part 5: Gasket material creep relaxation rate test method
GB/T 20671.1 Non-metallic gasket material classification system and test methods Part 1: Non-metallic gasket material classification system
ASTM D471 Rubber Properties Test Method Effect of Liquids
ASTM D2000 Classification System for Rubber Products for Motor Vehicles
ASTM E691 Laboratory Research Determination of Precision of Test Methods Work Instructions
ANSI B57.1 Compression cylinder inlet and outlet valve connections
