
What’s The Hardness Of LSR (Liquid Silicone Rubber)?
Liquid Silicone Rubber (LSR) has become one of the most versatile elastomers in modern manufacturing. Its unique properties—such as biocompatibility, chemical resistance, and durability—make it an essential material for industries ranging from medical devices to automotive seals and baby care products. One of the most important characteristics of LSR that engineers and buyers must understand is its hardness. Hardness plays a critical role in determining how a silicone product feels, functions, and performs under real-world conditions. But what exactly does hardness mean in the context of liquid silicone rubber, and how is it measured? This article explores the hardness of LSR, explains its measurement standards, factors that influence hardness, and guides you in choosing the right hardness for your applications.