The official website of Shanghai Songjiang Vibration Absorber Group Co., Ltd. proudly presents the results of the 2018 rubber expansion joint performance testing. This report details the rigorous testing procedures and outcomes that affirm the superior quality and reliability of our rubber expansion joints. The comprehensive testing was designed to evaluate several critical performance parameters, ensuring our products meet the highest industry standards.
2018 Rubber Expansion Joint Performance Testing Report
The 2018 performance testing report for rubber expansion joints from Songjiang Group covers a wide range of essential performance characteristics. These include:
- Tensile Strength: The maximum stress our rubber expansion joints can withstand while being stretched.
- Elongation at Break: The extent to which the rubber can stretch before breaking.
- Low-Temperature Brittleness: The ability of our rubber joints to maintain performance in cold environments without becoming brittle.
- Rubber-to-Fabric Adhesion Strength: The strength of the bond between the rubber and the fabric reinforcement.
- Hot Air Aging: The durability of our rubber joints when exposed to high temperatures over time.
- Change in Tensile Strength after Aging: Evaluating how the tensile strength is affected by prolonged heat exposure.
- Change in Elongation at Break after Aging: Assessing the impact of heat aging on the elasticity of the rubber.
- Resistance to Fluids: The rubber’s ability to resist various liquids without degradation.
- Change in Tensile Strength due to Fluid Exposure: Measuring how exposure to liquids affects tensile strength.
Testing Conducted By
The testing was meticulously carried out by the Shanghai Rubber Products Research Institute Testing Center (Shanghai Huayi Inspection and Testing Technology Co., Ltd.). Their comprehensive assessment ensured that all performance aspects of our rubber expansion joints were thoroughly evaluated.
Testing Results
The results of the tests were overwhelmingly positive, confirming that our rubber expansion joints meet all the specified criteria. The detailed findings can be found in the attached full report below.



Testing Standards
The tests were conducted in accordance with the following standards:
- GB/T 1690-2010: “Rubber, vulcanized or thermoplastic—Determination of the resistance to liquids.”
- GB/T 3512-2014: “Rubber, vulcanized or thermoplastic—Accelerated aging and heat resistance tests.”
- GB/T 528-2009: “Rubber, vulcanized or thermoplastic—Determination of tensile stress-strain properties.”
These standards ensure that our testing methods and results are in line with national and international benchmarks for rubber products, reinforcing our commitment to quality and reliability.

