2025-08-11
Aofeng Group Polyurethane Foam Sealants L/M/H Hardness Comparison: H-Grade Demonstrates Superior Performance
Aofeng Group, a leader in polyurethane materials, has developed a series of polyurethane foam sealants including L (Low hardness), M (Medium hardness), and H (High hardness) black material formulations. This article provides a professional comparison of the three products from the perspective of hardness characteristics.
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L-Grade: Suitable for general construction sealing and sound insulation
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M-Grade: Ideal for window/door installation and pipe fixing
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H-Grade: Recommended for bridge expansion joints and heavy equipment mounting
"Our H-Grade product achieves near-engineering-plastic hardness while maintaining polyurethane flexibility through special molecular structure design, leading domestic similar products," said Aofeng's Technical Director.
