THE GROMMET JOURNAL
Practical perspectives on materials, applications and choosing the right rubber grommet.
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Materials. Profiles. Applications.Light exposure can contribute to changes in a rubber grommet's surface and mechanical properties. Ultraviolet exposure, oxygen, temperature and moisture may act together, so outdoor durability depends…
A molded rubber part can change dimensions as it cures, cools and undergoes any specified post-cure or conditioning. Tooling allowances must account for this behavior so that…
A rubber grommet mold contains features that form the part, locate the tooling and support the chosen molding process. The exact arrangement depends on the profile, compound…
Rubber grommet quality depends on the compound, tooling, process settings and equipment condition. A visible defect can have several possible causes, so inspection should be followed by…
A rubber blend combines selected polymers in a formulation intended to meet particular processing or service requirements. The properties of a blend must be evaluated; they are…
Antistatic additives differ in chemistry, compatibility and operating mechanism. Some are incorporated into the compound, while others are applied as a surface treatment. These approaches should be…
Antistatic behavior can be achieved through different compound formulations or surface treatments. The aim is to control charge accumulation by providing an appropriate path for charge dissipation.
A rubber compound can accumulate charge under some handling and service conditions. The electrical behavior depends on formulation and environment, so the material name alone does not…
Rubber compounds can be formulated for different electrical properties. Conductive grades use suitable fillers to create electrical pathways through the material. An ordinary cable-protection grommet should not…
Conductive rubber compounds use suitable additives to achieve specified electrical properties. Carbon black, graphite and other conductive fillers can affect resistance, but the finished result depends on…
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