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Polysealing is a trusted manufacturer based in Xiamen, China with over 20 years of expertise in rubber sealing solutions. We deliver high-quality O-Rings, X-Rings, Oil Seals, and custom rubber components for automotive, industrial, medical, and hydraulic applications.
A leading manufacturer of rubber seals and custom parts with two decades of innovation, quality, and global service.
Our Poly Sealing is a manufacturer specializing in rubber seals & parts in Xiamen, China. Based on 20 years of technology experience, we have developed a one-stop solution from mold designing and rapid prototyping to mass production.
We are always 100% responsible to our customers, so we never use cheap quality materials. All materials are completely new and do not include any scrap. Trust in us — both of us will win much more market.
High-performance rubber sealing solutions engineered for reliability across industries.
Circular cross-section seals used to block fluids like air, water, and oil. Available in NBR, FKM, silicone, and more.
Four-lip seal with X-shaped cross-section for enhanced sealing performance and reduced friction.
TC, TB, TA, SC, SB, and other types. Designed to retain lubricants and exclude contaminants.
Custom-shaped seals for flanges and joints. Ideal for machinery, instruments, and industrial systems.
Tailored sealing solutions from mold design to mass production. Rapid prototyping available.
Metal-rubber composite seals for high-pressure and vibration-prone environments.
Continuous rubber cords for cutting custom O-rings on-site. Available in various diameters and materials.
Comprehensive sets of standard-sized O-rings for maintenance, repair, and industrial use.
High-temperature and chemical-resistant seals ideal for harsh environments in automotive and semiconductor industries.
Food-grade and medical-grade seals with excellent flexibility and temperature resistance.
High abrasion resistance and mechanical strength. Used in hydraulic and pneumatic systems.
Low friction, chemically inert seals for extreme conditions. Often used in semiconductor and chemical processing.
From mold design to global delivery, we offer a complete manufacturing ecosystem for rubber sealing solutions.
State-of-the-art equipment for mold tooling, plating, compound mixing, compression molding, and packaging.
Full inspection devices and scientific management ensure every product meets ISO3601 and customer specifications.
Fast turnaround from design to sample. Ideal for custom parts and urgent project needs.
Wide selection: NBR, FKM, Silicone, Polyurethane, PTFE, ACM, and more. No scrap materials used.
Over 5,000 mold tooling and sufficient stock ensure timely delivery to customers worldwide.
We build strong, long-term relationships based on trust, quality, and continuous improvement.
An O-Ring is a rubber sealing ring with a circular cross-section used to seal fluids such as air, water, and oil. Due to its o-shaped cross-section, it is called an O shape rubber seal.
In addition to the cross-section shape, X-Rings have four sealing lips which offer better performance in dynamic applications with reduced friction and longer service life, though they are typically more expensive than O-Rings.
We offer a wide range of materials including NBR (nitrile), FKM (Viton), silicone, polyurethane, PTFE (Teflon), and ACM. Each material is selected based on temperature, chemical exposure, and application requirements.
Yes, we provide full custom rubber part services from mold design and prototyping to mass production. We specialize in precision components for automotive, medical, and industrial sectors.
Our factory produces qualified products in full compliance with international standards such as ISO3601. We maintain strict quality control throughout the manufacturing process.
Have a question or need a quote? Contact us today for expert sealing solutions.
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