HSC cellular rubber is an EPDM-based cellular rubber. HSC stands for “semi-closed cells.” This means that the material has an open-cell structure, but when compressed, the cells close.
HSC cell rubber has a texture similar to Tempur. It is soft and resilient. The material is excellent for sealing in general and works very well as a door seal or weatherstrip; because it is soft and resilient, it seals out unevenness very effectively.
This material is ideal for use in “open and close” mechanisms, such as those found in cabinet doors. When you close the door, the material compresses and seals against air and water, and when you open the door, the material returns to its original shape.