Hengseng Packing & Sealing Co., Ltd.

Hengseng Packing & Sealing Co., Ltd. is a Chinese manufacturer of packing and sealing products for oilfield applications, located in Cixi, Fujian Province. The company holds an API Monogram license under API Spec 6A (Wellhead and Tree Equipment), indicating its sealing and packing products meet API standards for wellhead and surface tree applications in oil and gas production. Hengseng manufactures packing elements, seals, gaskets, and related sealing components used in wellhead assemblies, Christmas trees, gate valves, and other API 6A-rated wellhead equipment. Products include ring joint gaskets (RTJ), soft iron gaskets, BX/RX/R-type ring gaskets, elastomeric seals, and packing assemblies designed for high-pressure wellhead service. The company serves domestic Chinese oilfield operators as well as international wellhead equipment manufacturers requiring API 6A-compliant sealing solutions.