Cross-Linked Polyethylene, often abbreviated as PEX, is a type of plastic that is widely used in plumbing and heating systems. It is made by linking polyethylene molecules together, which enhances its strength and durability. This process also makes PEX resistant to temperature changes and chemical corrosion, making it suitable for both hot and cold water applications. One of the key benefits of PEX is its flexibility, allowing for easier installation in tight spaces and reducing the need for joints and fittings. Additionally, Cross-Linked Polyethylene is less likely to burst in freezing conditions compared to traditional materials, making it a popular choice for residential and commercial plumbing systems.