A mechanical component designed to limit travel within a system by providing resistance at a defined point. Often helical, it absorbs energy and restricts movement beyond a pre-determined threshold. A common application is within a valve mechanism where it prevents over-extension, safeguarding internal components from damage.
Such devices are critical for equipment longevity and operational safety. They ensure consistent performance by preventing parts from exceeding their design limits, reducing wear and tear. Historically, simpler versions were crafted from materials offering less precise control; modern iterations employ advanced alloys and manufacturing processes for enhanced reliability and predictability.