What type of material is excelsior commonly used for in casket construction?

Excelsior is a type of wood wool that is made from thin curls or shavings of wood. It is primarily used for cushioning in various applications, including casket construction. The natural properties of excelsior provide both support and shock absorption, making it ideal for lining caskets. Its lightweight and fibrous characteristics ensure that it can conform to different shapes and provide a soft resting surface for remains. This material is often preferred for its biodegradability and eco-friendly attributes, aligning with the increasing emphasis on sustainable practices in the funeral industry. Other materials listed, such as metal shavings, resin composites, and plastic fibers, are not traditionally associated with casket construction in the same way excelsior is, thus reinforcing excelsior's specific role in this context.