Harbin Shilong Sealing Materials Co., Ltd.
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Daqing Longhuaxin Industry Head Company (Valve Sealing Material Factory)
🇨🇳 China
200511-50 peopleManufacturerEstablished brand
Industry association member
Key customer
CHINA NATIONAL PETROLEUM CORP
Description
Daqing Longhuaxin Industry Head Company (Valve Sealing Material Factory) is a Chinese manufacturer specializing in sealing products, sealing equipment pipe fittings, chemical stuffing, heat preservation material, and related petrochemical accessories. Established in 2005, the company operates a factory and employs 11 to 50 people. As an appointed enterprise of China National Petroleum Corporation, it possesses strong technical capabilities in the study, development, and production of sealing products. The company offers a wide range of products including Expanded Graphite Stuffing Rings, Expanded Graphite Belt Sealing Spacers, Expanded Polytetrafluoroethylene (PTFE) Sealing Belts, Expanded Graphite Compound Boards, Polytetrafluoroethylene (PTFE) Sealing Spacers, Polytetrafluoroethylene (PTFE) Jacketed Spacers, Metal Jacketed Spacers, Reinforced Expanded Graphite Spacers, and Metal Winding Spacers. These products are widely utilized in petroleum, petrochemical, electrical power, metallurgy, machinery, and pharmaceutical industries for sealing, heat preservation, energy saving, and production enhancement in machine pumps, pipe valve pressure containers, and reaction towers. Daqing Longhuaxin Industry Head Company is ISO 9001 certified and holds safety registration and quality certifications from the State Bureau of Technical Supervision, ensuring stable performance and reliable quality.
Reinforced Expanded Graphite Spacer
Metal Jacketed Spacer
Expanded Graphite Belt Sealing Spacer
Expanded Graphite Compound Board
Expansion Graphite Stuffing Ring
Expansion Graphite Stuffing Ring
Metal Winding Spacer
Expanded Polytetrafluoroethylene (PTFE) Sealing Belt
Polytetrafluoroethylene (PTFE) Jacketed Spacer
Harbin Yisheng Science and Technology Develops Ltd.
🇨🇳 China
200311-50 peopleManufacturer/Service CompanyEstablished brand
OEM manufacturer
Product customization
Patented technology
Key market
North America
Description
Harbin Yisheng Science and Technology Develops Ltd. is a technology-based manufacturer and service company based in Harbin, China, specializing in the research, development, and production of sintered silicon carbides (SSiC) material products. Established in 2003, the company employs 11 to 50 people and operates a factory with 7 production lines. They utilize a unique and patented pressureless sintering process to produce SSiC components that are extremely hard, lightweight, low in porosity, and highly resistant to corrosion, sliding wear, high temperatures, and thermal shock. Their product portfolio includes five main series: mechanical seals, sliding bearings, nozzles, valves and valve trim, and structural components such as bushings, washers, and plungers. These high-performance SSiC products are designed for demanding environments requiring corrosion resistance, high thermal stability, and high wear resistance, serving industries such as petroleum, chemical, mechanical, metallurgical, power, navigation, and water plants. Harbin Yisheng Science and Technology Develops Ltd. offers customization services for parts based on customer drawings or samples and exports a significant portion of its products to international markets including Australia, Germany, India, Spain, and the UK, with an international presence through affiliates in North America and Hong Kong.
Bearings
Bearings (SSIC)
Mechanical Seals (SSIC)
