Manufacturer of high-performance seals
Sealing solution supplier
Ensuring product quality lies in pursuing practical effectiveness.
Production of Youjia sealing rings in any specification
Selected high-quality rubber, polyurethane, and engineering plastic materials from Europe, America, Japan, and Taiwan.
Production is available for any material, any specification, and any quantity.
Custom processing can be carried out according to the customer's operating conditions and dimensional requirements, ensuring rapid delivery without the need for any molds.
Our company's products are widely used in: large-scale hydraulic machinery, plastic machinery, hydroelectric and wind power generation equipment, coal mining machines, aerospace applications, pumps and valves, hydraulic cylinders, hydraulic motors, and more. These product lines utilize advanced raw material formulations and manufacturing processes, delivering sealing performance, wear resistance, and fatigue durability that closely match European standards—while maintaining pricing levels comparable to domestic competitors. With an exceptionally competitive cost-to-performance ratio, we offer precision machining tailored to your specific dimensional requirements, making us the ideal choice for your needs.
Moldless turning seals have the following characteristics:
1. There are no restrictions on standard or non-standard shapes; any cross-sectional profile can be machined by turning, including various sizes of dust rings, shaft-mounted U-rings, hole-mounted U-rings, and specially shaped components.
2. We can process materials with diameters ranging from 4 mm to 4 meters without the need for mold opening.
3. Specialized machine tools and cutting tools are used for processing imported seals, ensuring high product precision and meeting the requirements of equipment under various operating conditions.
4. Fast delivery schedule. Urgent orders can be delivered on the same day, significantly reducing the supply cycle and equipment downtime.
5. Manufactured using high-quality imported raw materials, the product features excellent characteristics such as hydrolysis resistance, oil resistance, high tear strength, and superior physical performance.
Differences between the production processes of turned seals and traditionally molded seals:
The raw material for turning polyurethane seals consists of imported liquid raw materials that are heated, melted, and then poured into preformed billet molds. These molds are subsequently processed using specialized CNC seal-turning equipment, which operates according to software-programmed data specifying various seal dimensions. The process culminates in the production of finished hydraulic seals.
1. Molded hydraulic seals: Molded hydraulic seals are produced by heating and melting filled rubber or polyurethane materials through molds. However, they have the following shortcomings:
①. Poor compactness: Due to insufficient filling material in the open mold, defects are likely to occur in the product.
②. Depending on the temperature environment, material batch, product size, and other factors, the shrinkage rate may deviate from the theoretical data, leading to significant dimensional tolerances in the finished products and making it difficult to maintain precise dimensions.
④. Different sections and dimensions each require dedicated molds, resulting in a complex manufacturing process and relatively long lead times for delivery.
2. Moldless Turned Seals: The barrel material (raw material) for moldless turned hydraulic seals is formed through high-pressure extrusion after being heated and melted.
We sincerely welcome customers from home and abroad. We are willing to cooperate with you sincerely to create a better tomorrow!
Ningbo Yuka Sealing Industry Co., Ltd.
Address: No.141, Gongmao 1st Road, Jishigang Industrial Zone, Haishu District, Ningbo City
Keywords
Youjia Sealing | Sealing Components
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