Why should brake lines be made of metal if they are prone to rusting? The pressure of a brake line on a manual braking system ranges from 900 to 1000 pounds per square inch, but the pressure of a brake line on a power-assisted brake system may reach 1,400 pounds per square inch or more, depending on the vehicle. For the purpose of ensuring that brake lines are able to sufficiently withstand the pressure that is applied to them, they are often constructed from steel or nickel-copper and sometimes coated with polyvinylidene fluoride (pvf). In order to splice two lines together or to convert from the metal line to the high-pressure rubber line that leads to the caliper, you are required to make use of compression fittings. this is the reason why brake lines rust, and why rubber cannot be used. One day or another, every metal will rust. The amount of time it takes for some metals, like aluminum, to rust is determined by the presence of other metals in the mixture. As a result of being coated with pvf, lines have a longer lifespan. pvf, on the other hand, has certain restrictions. To begin, it can only withstand temperatures of up to 338 degrees Fahrenheit, despite the fact that the brake line would almost never be subjected to temperatures of that magnitude. The coating is able to withstand stress and chemical degradation quite well, which is of utmost significance in regions that utilize salt and other ice-melting chemicals, such as bromine salt solutions, on the roads during the winter months. In the event that a rock or similar sharp item cuts the rubber brake line, it is more probable that the line would break or leak. Dry rot is another potential source of this problem. In the event that you ride over a high curb, you run the risk of causing damage to a rubber line or even removing it from the apparatus. Metal lines are rigid, which means that they do not droop, and they are more resistant to breaking when they are struck by anything. As an extra point of interest, metal lines are often used at the top of the frame since they are less likely to chafe as a result of friction than rubber lines are. When it comes to fixing rusty brake lines, there are two different approaches that may be used to solve the problem. The best course of action is to replace the brake line in its entirety. This indicates that you will need a tube bender in addition to a minimum of two compression fittings, one for each beginning and ending of the new line. It is important to bend the new line in the identical areas where you found a bend in the old line while you are removing the old line. There is also the option of removing the corroded component and replacing it with a fresh segment of brake line if you are in a rush. If, on the other hand, one part of the line is corroded, it is possible that the remainder of the line is rusted as well, and you will need to replace another segment. The strength of the line is reduced at the points where the compression fittings are connected, and this occurs with each additional segment that is added. In the event that you discover rusty brake lines and decide to replace the complete line, you should first flush the braking system, then replace the rubber lines, and then fill the system with brand new brake fluid. If any rust were to get into the lines, it may lower the quantity of brake fluid that is delivered to the calipers, which would result in a reduction in the strength of the brakes. The brake system university is a microsite that provides guidance, reviews, and technical information on a variety of braking system components, including brake lines, brake line repair, and ABS sensors, among others. You will be able to connect with genuine, high-quality replacement parts for your brake system through brake system university. These replacement parts include replacement brake lines, replacement ABS sensors, and replacement brake line repair kits. These parts have been tested and evaluated by certified professionals. This website (https://brakesystems.autopartsu.com/) can assist you in selecting the appropriate component for your brake system in the event that you want to replace any given component of your braking system. Assisting you in making a buying selection in a straightforward manner, brake system university provides you with access to reliable evaluations and references.