Founded in Shanghai in 2010, Sonkit has focused on metal seal development and production since 2015. The company develops and manufactures standard and custom metal ring seals for demanding applications, including aerospace, semiconductor, nuclear and fusion, power generation, oil and gas, petrochemical, automotive, and industrial equipment.
Its product range includes O-, C-, U-, V- and E-rings, spring-energized seals, and custom profiles. Solutions are designed around operating temperature and pressure, media, leakage limits, groove geometry, preload, materials, and coatings.
Sonkit supports customer projects from application review and design through manufacturing, inspection, and batch documentation. The company profile reports more than 70 full-time employees, over 500 successful customer applications, and customers in more than 30 markets. Quality credentials reported in company materials include ISO 9001, AS9100D, and Nadcap; certification scope and validity should be confirmed against current certificates.
Certifications
ISO 9001; AS9100D; Nadcap (company-reported; verify current scope and validity)
