Lapping

 Lapping is the most crucial finishing process for achieving absolute sealing between balls and seats. Leveraging proprietary lapping technology, we utilize custom-engineered lapping plates and precision-formulated compounds under highly controlled conditions. This not only corrects microscopic geometric deviations but also achieves surface roughness as low as Ra  0.02μm. Every lapped ball-seat pair undergoes rigorous pressure decay tests, ensuring that choosing our lapping service means opting for absolutely reliable valve sealing cores.