What prevents gas from leaking?
There are several components of the fuel system that have been designed to prevent gas from leaking during the fuel delivery process. The fuel tank is made of hardened plastic called polyethylene. These tanks are tightly sealed and designed to prevent leaks for an extended period of time. However, fuel tank leaks are possible and most often happen as a result of corrosion or damage to the fuel tank. The fuel lines are made of hardened plastic or a strong rubber material. Rubber lines are less likely to break and thus are more effective in preventing gas leaks. Rubber seals for the fuel injector, fuel rail, and the fuel pressure regulator are designed to withstand the high pressure of the fuel from the fuel injector and the corrosive properties of the gas to prevent gas leaks. Over time, these rubber seals may wear or break and gas leaks happen when fuel escapes these seals. Gas leaks are extremely dangerous because of how flammable gas is and should be addressed immediately, in the event of a leak in the fuel delivery system.
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