A rubber strip is a narrow, flexible length of extruded rubber, typically engineered from high-quality compounds such as EPDM, neoprene, nitrile, or silicone. Designed to act as a barrier or seal, a rubber strip’s primary function is to fill gaps where two surfaces meet — such as around doors, windows, vents, or machine panels. Available in various shapes, sizes, and hardness levels, these strips can be tailored to fit virtually any space or functional requirement.