Identification of swelling/shrinking coefficients under CO₂ on an FKM O-ring – Comparison with HNBR and influence of reinforcements on the matrices

A better understanding of elastomers’ behavior during Rapid Gas Decompression (RGD) requires advanced knowledge what is happening gas sorption and desorption. This will offer to improve numerical simulation phenomena consider a real environmental use an O-ring, as for thermal applications. previous experimental study developed testing protocols investigate the performance elastomeric O-rings. The non-contact measurement technique has been validated identify swelling shrinking coefficients desorption carbon dioxide (CO 2 ) from Hydrogenated Nitrile Butadiene Rubber (HNBR) O-ring. present work describes effect CO pressures on Fluorocarbon rubber (FKM) seals coupled with temperature. To evaluate reinforcing HNBR FKM matrices nanofillers, tests were carried out compared those two elastomers without fillers. four materials’ are identified, their upon decompression measured. It appears that best candidate under applied service conditions. On other hand, nanofillers introduced in may cause some early damages RGD