Silicone bottle stopper with common hardness
The commonly used hardness of silicone bottle stoppers is 45 degrees (plus or minus 5A), because silicone bottle stoppers don't need to be too hard to be elastic and can play a good sealing role. The most important thing of silicone bottle stopper is to ensure the quality. I think Dongguan Dalingshan Huagui Rubber & Plastic Products Factory can still do this. Many styles.