Airtightness additives are chemical substances or additives used to improve the airtightness of materials or systems, which can fill tiny pores, cracks or seams to reduce gas penetration or leakage.
Rubber airtightness refers to the ability of a rubber product to prevent air leakage through its surface or interior under certain conditions. Hewitt airtightness additives are usually widely used in seals, pipes, tapes, tires and other fields.
