Plastochem rubbber lubricant
To minimize the effects of frictional forces on your seal and avoid harmful abrasion, proper lubrication is essential. While lubrication plays a crucial role throughout the lifespan of a rubber seal, its greatest benefits are realized during installation. Using the right type of lubricant not only facilitates easier installation but also protects the seal from pinching, tearing, or abrasion. There are various lubricants available for rubber seal installation, including greases, oils, and specialty coatings. However, selecting the right lubricant requires considering the specific type of rubber material, as each elastomer demands a lubricant that is chemically compatible.
Lubricants for rubber applications generally fall into three categories based on when and how they are applied. Internal lubricants are mixed directly into the elastomer compound before molding. These additives are evenly dispersed throughout the rubber and reduce friction across the entire part. Some of these internal lubricants migrate, or “bloom,” to the surface, providing additional surface lubrication. Temporary external lubricants are typically liquid-based and applied after molding. They are designed to be easily removed and are ideal for reducing friction during assembly, minimizing the risks of cuts, pinching, and abrasion. Semi-permanent lubricant coatings are applied via dipping, spraying, or vapor deposition. While some may peel or flake—causing potential contamination—more advanced coatings chemically alter the surface or are baked on, offering long-lasting protection. PlastochemRubber, moving beyond traditional Teflon coatings known to flake, now utilizes more durable and higher-quality coating materials for enhanced performance and reliability.
When selecting a lubricant, several factors should be taken into account. Temperature tolerance is critical, as lubricants with low flash points may evaporate or degrade at high temperatures. Stability under friction is also essential; the lubricant should maintain its consistency rather than hardening or softening. For systems involving water or other fluids, water resistance is necessary to prevent breakdown. Chemical compatibility with the seal material is perhaps one of the most important considerations—using an incompatible lubricant can cause the rubber to swell, increasing squeeze and making installation more difficult. Lastly, ensure your lubricant meets any relevant regulatory requirements, such as NSF for potable water, FDA for food applications, or USP/ISO standards for medical use.
Proper application of lubrication is just as important as choosing the right product. Whether using internal or external lubricants, the objective is to apply a thin, uniform layer over the entire seal surface. This uniformity ensures maximum effectiveness and minimal friction. For external lubricants, common methods include applying with a brush or by hand, dipping the seal into the lubricant for full coverage, or placing both the lubricant and seals in a container and shaking until evenly coated. PlastochemRubber also offers a comprehensive O-Ring Lubricant Guide, which outlines suitable lubricants for various elastomers and applications, helping you make the best choice for your sealing needs.
Comments
Post a Comment