Research on the Material Compatibility of Elastomer Sealing O-Rings

Abstract

Significant attention has been paid to combustion engines for the utilization of new liquid fuels and their testing at the present. Research activities in ensuring the optimum function of the engine by watching sealing and distribution rubber elements, which are part of fuel systems, should be an integral part of fuels research. When evaluating fuels utilization in combustion engines, the issue has to be judged in a complex. However, when using biofuels in combustion engines, it is not always simple owing to the different degradation properties of these products. Elastomer material is not entirely resistant to various types of fuels. More or less, it is possible to expect changes in its mechanical properties. For the evaluation of the functionality of elastomer sealing elements based on ACM, HNBR and FVMQ type O-rings with pure and blended fuels, the evaluation of changes in mass, hardness Shore A, permanent deformation CS, tensile strength TS and deformation Eb after immersion with the tested fuel is mainly used. Permanent changes were found by the tests. The degradation of elastomer O-rings was more pronounced for the tested fuels containing ethanol, iso-butanol, n-butanol, methanol and dodecanol. HVO 100 fuel containing hydrotreated vegetable oil did not show significant degradation of elastomer O-ring seals. Of the O-rings tested, the FVMQ type O-rings showed the best performance in terms of material compatibility for all fuels tested.

The Contribution of BaTiO3 to the Stability Improvement of Ethylene–Propylene–Diene Rubber: Part I—Pristine Filler

“…Starting with the result analysis from a previous report [96], it is easy to consider that irradiation processing is a welcome procedure for the manufacture of O-rings in the presence of carbon black. However, the favorable course of degradation is found only for the elastomer containing 2.5 phr of barium titanate.…”

Compatibility Study of Polyamide (PA6) with Lubricant Bases for Electric Vehicle Applications

“…A similar approach to the material compatibility of elastomer sealing O-rings was carried out, and permanent changes were found by the tests. The degradation of elastomer O-rings was more pronounced for the tested fuels containing ethanol, iso-butanol, n-butanol, methanol, and dodecanol [17].…”

A Systematic Investigation of the Kinetic Models Applied to the Transport Behaviors of Aromatic Solvents in Unfilled Hydrogenated Nitrile Rubber/Ethylene Propylene Diene Monomer Composites

“…The solvent resistance of rubber plays an important role in the application of rubber products that are often in contact with liquid environments [2,3]. The entry of small molecular liquids greatly reduces the performance of rubber products and thus shortens the service life, making an investigation of the transport process of solvent molecules in rubber more meaningful [4,5]. With further investigation of the solvent resistance of rubber, some kinetic transport models, such as the Korsmeyer-Peppas and Peppas-Sahlin models, which were originally used in the pharmaceutical field, have been frequently applied to rubber-solvent systems to characterize the transport mechanism [6].…”