Offgassing of VOCs from inexpensive vulcanized tire and tool rubber (particularly from "made in china" manufactured goods) can vary greatly. This can be empiric

Offgassing of VOCs from inexpensive vulcanized tire and tool rubber (particularly from "made in china" manufactured goods) can vary greatly. This can be empirically varified at any hardware store or home depot. Ingestion or incorporation of these off-gassing materials into the human bloodstream would are really beyond the scope of their OEM purposes/safety. By contrast, compare silicone rubber (widely believed to by 'hypoallergenic') with previous natural and synthetic rubbers. In applications from scuba diving to medical and food service applications, its clear that not all such things are create equal.