About Us
Who We Are
DHK SEALING TECHNOLOGY CO., LTD is a Hong Kong-based sealing solutions supplier serving industrial clients worldwide. Registered in the heart of Asias premier business hub, we combine the commercial agility of Hong Kong with deep engineering roots in mainland China to deliver high-performance rubber and high polymer sealing products to demanding industries.
While we operate as an independent international trading company, our strength comes from a fully integrated manufacturing infrastructure that we own and manage. This allows us to offer competitive pricing, strict quality control, and reliable delivery—all while maintaining the flexibility to handle custom projects of any scale.
Our Manufacturing Backbone
Behind our global brand stands a modern production complex spanning over 13,000 m², staffed by more than 300 skilled professionals and supported by a dedicated R&D team of 28 engineers.Our facilities are equipped with state-of-the-art flat vulcanizing presses, CNC lathes, automatic all-inspection packaging machines, and other equipment.as well as specialized rubber-to-metal bonding capabilities.we support industries ranging from automotive, aerospace, oil & gas, to food processing and general machinery.
We produce a comprehensive range of sealing components:
• Standard and custom-profile O-rings, X-rings, V-rings, U-cups
• Rubber gaskets, flange seals, and rectangular rings
• Bonded seals, combination seals with metal inserts
• Spring-energized PTFE seals and engineering plastic components
• Custom-molded parts to client drawings or samples
With inside diameters minimum to 0.5 mm and cross-sections from 0.5 mm to 25 mm, we can accommodate virtually any specification. Our proprietary 45‑degree split O ring technology is a domestic industry milestone, and we can produce extra large or infinitely long O rings on request.
Quality Assurance & Certifications
Quality assurance that Our manufacturing operations are certified under IATF 16949,ISO 9001, and AS9100.We also support certifications including FDA, NSF, KTW, WARS, ROHS and NORSOK M-710 to facilitate market entry to EU, US, and Middle Eastern markets.
Every batch is fully traceable through our ERP system, and our in-house laboratory conducts rigorous testing on material properties, compression set, and chemical resistance. Our quality control exceeds national standards, ensuring that every seal delivered performs reliably in the field.
Global Inventory & Logistics
To serve international clients with speed and efficiency, we maintain a vast stock of over 45,000 sealing product types across multiple logistics centers in China. This enables rapid response to urgent orders—often shipping within 72 hours—while our Hong Kong headquarters facilitates seamless cross‑border trade, multi‑currency transactions, and efficient global freight forwarding.
Our Mission
To empower global engineering with reliable,innovative,and sustainable sealing solutions. At DHK,we do not just sell components, we provide sealing solutions that keeps your operations leak-free and efficient.
One Team, Dual Advantage
With our strategic headquarters in Hong Kong and robust manufacturing roots in Xiamen/Ningbo, we offer the best of both worlds: global accessibility and localized engineering excellence. Whether you require a single high-precision seal or a long-term supply partnership, DHK Sealing Technology is your trusted gateway to high-performance sealing solutions.
DHK SEALING TECHNOLOGY CO., LTD is a Hong Kong-based sealing solutions supplier serving industrial clients worldwide. Registered in the heart of Asias premier business hub, we combine the commercial agility of Hong Kong with deep engineering roots in mainland China to deliver high-performance rubber and high polymer sealing products to demanding industries.
While we operate as an independent international trading company, our strength comes from a fully integrated manufacturing infrastructure that we own and manage. This allows us to offer competitive pricing, strict quality control, and reliable delivery—all while maintaining the flexibility to handle custom projects of any scale.
Our Manufacturing Backbone
Behind our global brand stands a modern production complex spanning over 13,000 m², staffed by more than 300 skilled professionals and supported by a dedicated R&D team of 28 engineers.Our facilities are equipped with state-of-the-art flat vulcanizing presses, CNC lathes, automatic all-inspection packaging machines, and other equipment.as well as specialized rubber-to-metal bonding capabilities.we support industries ranging from automotive, aerospace, oil & gas, to food processing and general machinery.
We produce a comprehensive range of sealing components:
• Standard and custom-profile O-rings, X-rings, V-rings, U-cups
• Rubber gaskets, flange seals, and rectangular rings
• Bonded seals, combination seals with metal inserts
• Spring-energized PTFE seals and engineering plastic components
• Custom-molded parts to client drawings or samples
With inside diameters minimum to 0.5 mm and cross-sections from 0.5 mm to 25 mm, we can accommodate virtually any specification. Our proprietary 45‑degree split O ring technology is a domestic industry milestone, and we can produce extra large or infinitely long O rings on request.
Quality Assurance & Certifications
Quality assurance that Our manufacturing operations are certified under IATF 16949,ISO 9001, and AS9100.We also support certifications including FDA, NSF, KTW, WARS, ROHS and NORSOK M-710 to facilitate market entry to EU, US, and Middle Eastern markets.
Every batch is fully traceable through our ERP system, and our in-house laboratory conducts rigorous testing on material properties, compression set, and chemical resistance. Our quality control exceeds national standards, ensuring that every seal delivered performs reliably in the field.
Global Inventory & Logistics
To serve international clients with speed and efficiency, we maintain a vast stock of over 45,000 sealing product types across multiple logistics centers in China. This enables rapid response to urgent orders—often shipping within 72 hours—while our Hong Kong headquarters facilitates seamless cross‑border trade, multi‑currency transactions, and efficient global freight forwarding.
Our Mission
To empower global engineering with reliable,innovative,and sustainable sealing solutions. At DHK,we do not just sell components, we provide sealing solutions that keeps your operations leak-free and efficient.
One Team, Dual Advantage
With our strategic headquarters in Hong Kong and robust manufacturing roots in Xiamen/Ningbo, we offer the best of both worlds: global accessibility and localized engineering excellence. Whether you require a single high-precision seal or a long-term supply partnership, DHK Sealing Technology is your trusted gateway to high-performance sealing solutions.
