Abrasive wear resulting from the microclastic rock is a common failure phenomenon in the drilling environment that often limits the sealing ability and the service life of seals. In this study, the friction and wear process of fluoro rubber (FKM) seals against 304 stainless steel (SS304) after one single entry of SiO₂ abrasives were investigated. The influence of the changes in particle state on friction coefficient evolution, wear loss evolution, wear morphologies, and wear mechanisms were discussed in detail. The results indicate that the presence of abrasive particles dispersed between the sealing interfaces clearly improves the friction performance of the seal pairs and deteriorates the wear performance of the metal counterpart. The movement and breakage of particles after one single entering into the sealing interface were obtained. And on this basis, the stable wear process can be divided into three stages. In addition, the main causes contributed to this change of wear mechanisms are the random movement and process of continuous breakdown of abrasive particles. Furthermore, the transition of the wear mechanism that clearly describes the wearing behavior of the seal pairs under these abrasive wear conditions was identified. The results of this study enhanced our understanding of the abrasive wear degradation of rubber seal in practical drilling applications.

微碎屑岩引起的磨粒磨损是钻井环境中常见的失效现象，往往会限制密封能力和密封件的使用寿命。在本研究中，单次进入 SiO ₂后氟橡胶 (FKM) 密封件与 304 不锈钢 (SS304) 的摩擦磨损过程磨料进行了研究。详细讨论了颗粒状态变化对摩擦系数演变、磨损损失演变、磨损形态和磨损机制的影响。结果表明，分散在密封界面之间的磨粒的存在明显提高了密封副的摩擦性能，并降低了金属配对件的磨损性能。获得单次进入密封界面后颗粒的运动和破碎情况。并在此基础上，稳定磨损过程可分为三个阶段。此外，造成这种磨损机制变化的主要原因是磨粒的随机运动和不断分解的过程。此外，磨损机制的转变清楚地描述了密封副在这些磨料磨损条件下的磨损行为。这项研究的结果增强了我们对实际钻井应用中橡胶密封件磨粒磨损退化的理解。