Are you looking for the best gasket and O-ring factories in China? With so many options available, it can be overwhelming to choose the right one. In this article, we’ll compare the top manufacturers, highlighting their strengths, product ranges, and what sets them apart in the industry. Let’s dive in and find the perfect fit for your needs.

China O Rings Manufacturers and Suppliers

China O-Ring Kits Suppliers – NNK oil seal

Product Details: The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 popular sizes, either in inches or millimeters. The O-rings are made from commercial-grade nitrile butadiene rubber (NBR) and fluoroelastomer (FKM) materials, offering oil, chemical, and high-pressure resistance. The kit is suitable for various applications, including machines and excavators. The O-rings have a hardness range of 60-90 Shore A and can operate in temperatures from -40°C to 260°C. The kit comes in a practical resealable plastic case and is certified with ISO9001/TS16949 standards.

Pros:
– High-quality materials (NBR and FKM) providing excellent oil and chemical resist…
– Wide range of sizes (30 popular sizes) for various applications
– Durable and long-lasting with thick wall construction
– UV resistant and suitable for use with liquids such as oil
– Certified with ISO9001/TS16949 standards ensuring high quality
– Practical resealable plastic case for easy storage

Cons:
– Limited to specific material types (NBR and FKM), which may not be suitable for…
– No mention of availability for custom sizes beyond the 30 included
– May require additional backup rings for elevated operating pressure environments

Top 10 O-ring Manufacturers and Suppliers in China (2024)

Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司

FKM O Rings, China NBR O Ring supplier

O-Rings, Rubber Seals – Best China Manufacturer & …

Product Details: Savvy Rubber offers a wide range of o-ring products, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. These o-rings are made from various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, and Aflas. The o-rings are available in both imperial and metric sizes and can be customized to meet specific needs at a low mold/tooling cost. The temperature range for these o-rings varies by material, with Silicone o-rings operating from -70°C to 220°C. The hardness of the o-rings is measured in Shore A, typically ranging from 60 to 90, with 70 being the most commonly used. O-rings

can be produced in various colors, with standard colors recommended for cost and identification purposes.

Pros:
– Wide range of materials available, including NBR, FKM, and Silicone, each with u…
– Custom o-ring manufacturing at low mold/tooling costs and fast delivery times.
– High-quality o-rings with good sealing performance under various pressure and te…
– Available in various colors and sizes, including both imperial and metric standa…
– Materials like Silicone are FDA food grade and suitable for medical and food ind…

Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install.
– Unique or non-standard colors may increase the cost and require a larger minimum…

Viton O Ring Suppliers, Manufacturers, Factory

China PTFE O-Ring Supplier

Product Details: PTFE O-rings are made from polytetrafluoroethylene (PTFE), also known as Teflon. They are available in various dimensions and are FDA compliant. These O-rings are known for their excellent chemical resistance, low friction coefficient, and high temperature resistance. They can operate continuously in temperatures ranging from -260°C to 250°C and are resistant to most chemicals, including acids, bases, oils, and solvents.

Pros:
– Excellent chemical resistance to most chemicals, including acids, bases, oils, a…
– High temperature resistance, operating continuously from -260°C to 250°C.
– Low friction coefficient, allowing for easy movement and minimal wear.
– Non-toxic and FDA compliant, suitable for food, pharmaceutical, and laboratory a…
– High abrasion resistance and toughness.

Cons:
– Limited elastic recovery, which can make them unsuitable for dynamic seals.
– Not easily compressed, which may affect sealing performance in some applications…
– Require careful design and installation to avoid excessive stretching and ensure…

Perfluoroelastomer FFKM O ring Manufacturer

China Supplier Rubber Combined Gaskets Bonded Seal …

Product Details: The product is a Rubber Combined Gasket Bonded Seal for Flanged Joints, also known as a compound gasket. It is used to seal spaces between stationary and moving components in mechanical equipment. The seal consists of three basic components: the sealing element (nitrile rubber part), the metal case, and the spring. It is made from high-quality raw materials such as NBR, silicon, and FKM imported from the USA, Germany, and Southeast Asia. The product is durable, water-resistant, and oil-resistant. It is widely used in various applications including engines, transmissions, gearboxes, and axles.

Pros:
– High quality raw materials from reputable suppliers
– Durable, water-resistant, and oil-resistant
– Fast production and in-time delivery
– One-stop custom service and value-added services
– OEM/ODM services available
– 100% inspection of finished products before shipment

Cons:
– No specific cons mentioned in the product description
– Dependence on import of raw materials could lead to supply chain issues

Comparison Table

Frequently Asked Questions (FAQs)

What types of materials are commonly used to manufacture o-rings in China?

In China, o-ring manufacturers often use a variety of materials to cater to different applications. The most common materials include Nitrile (NBR), Fluororubber (FKM or Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM is known for its excellent comprehensive performance and is used in high-standard sealing equipment. Silicone is popular in medical and food industries because it is tasteless, non-toxic, and resistant to high and low temperatures.

Can Chinese o-ring manufacturers provide custom-made o-rings?

Yes, many Chinese o-ring manufacturers offer custom-made o-rings to meet specific customer needs. Companies like Savvy, Hongjie, and SWKS Seal provide one-stop OEM/ODM solutions, allowing you to customize the design, size, material, color, and packaging of the o-rings according to your specifications. They also have a wide range of molds and can produce custom o-rings at a low mold/tooling cost.

What are the typical applications of o-rings and gaskets produced in China?

O-rings and gaskets produced in China are used in a broad range of industries. They are essential in aerospace, automotive, medical equipment, military, and various industrial machinery. These seals are used for making oil-handling hoses, self-fueling tanks, hydraulic and pneumatic seals, and other critical components that require high-quality sealing solutions.

How do Chinese o-ring manufacturers ensure the quality of their products?

Chinese o-ring manufacturers ensure high-quality products through rigorous quality control measures. Companies like Jiangyin No.3 Rubber Manufacturer and SWKS Seal have highly experienced staff who conduct thorough checks and tests on each product before shipping. Many of these manufacturers also hold international certifications such as ISO 9001, ISO 14001, and IATF16949, which guarantee their products meet international standards.

What kind of certifications and standards do Chinese o-ring manufacturers adhere to?

Chinese o-ring manufacturers adhere to various international standards and certifications. These include ISO 9001 for quality management, ISO 14001 for environmental management, and IATF16949 for the automotive industry. They also comply with specific industry standards such as AS568 for the USA, BS1516 for the UK, DIN 3771 for Germany, and ISO 3601 for international standards. This ensures that the products meet the required quality and safety standards for global markets.