Rod Scrapers

MFP Seals exclusion seals offer a range of rod scrapers that address different levels of severity in motion applications. MFP Seals scrapers are suitable for harsh conditions that involve temperature extremes, abrasives, and other forms of contaminants that cause rod damage or abrasion. The range provides increasingly robust wiping solutions for increasingly extreme conditions. MFP Seals scrapers are usually made of metal, either in the form of a solid, precision-machined scraping element, or as a major component of an assembly . All MFP Seals parts are precision-turned or ground for maximum concentricity and roundness to provide superior sharpness of scraping surfaces and precision relative to rod geometry. Compared to traditional polymer or elastomer materials, metal has been field-proven and extensively tested to offer superior performance in harsh conditions. As a physical barrier, a metal exclusion seal is less prone to deflection and yield in the face of contaiminants that have bonded to a mechanical surface. Metals are free of the vulnerabilities of aging, embrittlement, crazing, cracking, and compression-set, and it can be expected to out-perform and out-last polymer scrapers. A metal scraper-to-metal rod interface maintains a close tribological interface between the rod and scraper, preventing “over-ride” and maximizing the potential for sustained scraping. Metal also maintains a constant modulus of elasticity over time, conforming to rod irregularities resulting from wear and damage. In high-pressure and high-temperature conditions, metal increases in performance instead of hardening, crazing, without becoming brittle, or suffering from compression-set. A scraper constructed of metal alloys possessing bearing-like characteristics, lubricate the rod, as well as deposit material around the high points and into the low points of nicks and burrs on the rod surface, burnishing the surface and thus smoothing irregularities to maintain fluid cohesion and prolong seal life.