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High-performance industrial gaskets and sealing products engineered for reliability in chemical, power, metallurgy, shipbuilding, pharmaceutical, and high-tech industries.
Ningbo Yonglida Sealing Co., Ltd. (formerly Cixi Huayi Machinery Co., Ltd.) is a leading manufacturer of industrial sealing products located in Cixi City, on the south bank of Hangzhou Bay — a key economic zone in the Yangtze River Delta.
We integrate development, production, and sales into a unified system, specializing in high-quality sealing solutions for demanding industrial environments.
Our company is ISO9001:2000 certified, reflecting our commitment to quality management and continuous improvement. We prioritize product excellence and customer satisfaction in every aspect of our operations.
Precision-engineered spiral wound gaskets made from stainless steel and flexible graphite. Ideal for high-pressure and high-temperature applications in chemical and power plants.
High-density packing for valve stems, providing excellent sealing under dynamic conditions. Resistant to wear, heat, and chemical corrosion.
Flexible graphite braided packing for pumps and valves. Offers excellent thermal stability and chemical resistance in aggressive environments.
Polytetrafluoroethylene (PTFE) packing with low friction and outstanding chemical inertness. Suitable for food, pharmaceutical, and semiconductor applications.
Ceramic fiber and graphite composite packing designed for extreme temperature applications in metallurgy and power generation.
NSF-certified sealing materials compliant with food and beverage industry standards. Non-toxic, odorless, and safe for direct contact.
Tailored gasket designs and materials to meet unique industrial requirements. CNC cutting, waterjet, and die-stamping capabilities.
Multi-layered sealing sheets combining rubber, PTFE, and metal for enhanced durability and leak prevention in flange joints.
Our manufacturing processes meet international quality standards, ensuring consistent performance and reliability across all product lines.
Trusted in machinery, chemical, electric power, metallurgy, shipbuilding, food, pharmaceutical, and high-tech industries worldwide.
We work closely with clients to understand their needs and deliver customized sealing solutions with responsive support and technical guidance.
Our metal wound gaskets typically use stainless steel (304, 316) for the metallic winding and flexible graphite or PTFE as the filler material, ensuring high resilience and chemical resistance.
Yes, many of our products, especially graphite-based packings and metal gaskets, are designed to perform reliably in temperatures exceeding 500°C.
Absolutely. We provide custom fabrication services using CNC and waterjet cutting to meet specific flange dimensions and application requirements.
Yes, our PTFE braided packing is manufactured using FDA-compliant materials, making it safe for use in food processing and pharmaceutical applications.
We serve a wide range of industries including chemical processing, power generation, metallurgy, shipbuilding, food & beverage, pharmaceuticals, and high-tech manufacturing.
For product inquiries, technical support, or custom sealing solutions, visit our official website to connect with our team.
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