2006
Focused start in Xuzhou
Founded as a specialized workshop for floating oil seal casting, machining and grinding — one product family from day one.
Xuzhou Huatong researches, develops and manufactures floating oil seals for construction, mining and heavy-duty equipment — built for wear resistance, sealing integrity and long service life.
On excavators, track rollers, final drives and mining machinery, floating oil seals must keep mud, dust and water out while reducing lubricant leakage. Early seal failure shortens rebuild cycles and raises maintenance cost.
Buyers also face inconsistency when floating seals are sourced from mixed product catalogs — where hardness, face finish and batch quality can vary from order to order.
Xuzhou Huatong Floating Oil Seal Technology Co., Ltd. was established as a specialized manufacturer dedicated to floating oil seals and high-performance mechanical sealing products — focused on wear resistance, sealing performance, impact resistance and long-term durability for heavy-duty industrial applications.
Mud, dust and slurry challenge undercarriage and hub seals across construction and mining duty.
Stable sealing faces help reduce oil loss and protect bearings and gears under continuous load.
A dedicated floating seal line supports repeat OEM and distributor programs with clearer process control.
Since 2006, HuaTong has stayed focused on floating oil seal technology — expanding process capability, documentation and intellectual property around one product family.
Founded as a specialized workshop for floating oil seal casting, machining and grinding — one product family from day one.
Achieved ISO 9001:2015 certification and expanded export programs to North America and Europe with documented quality controls.
A 5,000㎡ cast-to-lap factory with 200k+ sets annual capacity, 100+ patents & IP, and involvement in industry standards including JB/T 8293 and MT/T 784.
Our product line is deliberately focused on DO, DF and XY floating oil seals. Casting, CNC machining, heat treatment and face lapping stay in one factory so hardness, geometry and sealing faces remain consistent from sample to volume production.
Controlled alloy melting for consistent metal structure
Precision machining for housing and groove geometry
Hardness control for abrasive and impact duty
Flat sealing faces for long-term sealing integrity
Dimensional checks and leak testing before packing
Proprietary 15Cr3Mo alloy targeting HRC 65–72 for abrasive undercarriage and hub applications.
Twin-face grinding for flatness within 0.003mm and surface roughness under Ra 0.2μm.
DO, DF and XY categories with documented specs for housings, OEM part numbers and rebuild kits.
Share an OEM part number, housing size or a photo of the worn seal — we confirm matching options before production.
HuaTong is committed not only to manufacturing sealing products, but also to the technological development and standardization of the floating oil seal industry.
The company has participated in the research and drafting of industry standards and technical specifications related to floating oil seals, including the JB/T 8293 series and MT/T 784.
Looking ahead, Xuzhou Huatong will continue to strengthen R&D and manufacturing expertise — delivering reliable sealing products and solutions for global manufacturers of construction machinery, mining equipment and heavy-duty industrial machinery.
Patents, standards involvement, ISO-managed production and third-party laboratory reports give buyers a clear trail from process control to shipment documentation.
Intellectual property covering floating oil seal design, wear-resistant materials, manufacturing processes and production equipment.
Participation in research and drafting of floating oil seal standards, including JB/T 8293 and MT/T 784.
ISO 9001 quality management with SGS and EBO laboratory reports available for technical packages.
Export packing, shipping documents, private label and custom marking for distributor and OEM programs.
Share DO / DF / XY type, OEM part number, housing size or a photo of the worn seal — we reply within 24 hours on working days.
Contact Engineering Team