The Importance of Brake Fluid
Brake fluid isn’t necessarily part of your car’s braking system, but it’s just as important as the other parts. Brake fluid is a type of hydraulic fluid that transfers pressure from the master cylinder to the braking components at each wheel.
It’s important to know that brake fluid is hygroscopic and can attract water. This is a minor issue, as water can cause corrosion and damage rubber seals.
Speaking of brake fluid reservoir, this small reservoir sits on top of the master cylinder and supplies brake fluid. Every time you press the brake pedal, the master cylinder pushes the fluid from the reservoir through the brake lines to the slave cylinder at the wheel.
Materials Used in Brake Systems
Let’s talk about the materials commonly used in brake systems.
First of all, rubber is very important for manufacturing the brake hoses and seals in the brake system. You know those flexible brake lines that connect the master cylinder to the caliper and wheel cylinder? This is where rubber comes into play.
This material allows the lines to flex as the car’s suspension moves. Plus, rubber seals in the system maintain pressure and prevent fluids from leaking out. Cast iron is the preferred material for brake discs and drums found on most cars.
Other materials used in braking systems:
1. Aluminum – Aluminum is lightweight and corrosion resistant, and is used in some high-performance brake calipers.
2. Steel – Commonly used to manufacture ABS modules, brake boosters, and various components that require strength and durability. Stainless steel braided brake lines are often used instead of rubber in high performance vehicles.
3. Ceramic – Used in some premium or high performance brake pads for better heat management and less brake dust.