Are you looking for the best 5mm o-ring manufacturers in China? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top o-ring factories in China, highlighting their strengths, product ranges, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

5mm Cross Section Nitrile O-Rings

Product Details: These O-rings have a cross-section of 5mm and are made from nitrile (NBR) material. They are available in various inner diameters and are suitable for sealing static and dynamic applications. The nitrile material provides good resistance to oil, fuel, and other chemicals, and the 70A durometer rating indicates a medium hardness level. They are commonly used in applications such as cylinders, pistons, pipes, and tubes.

Pros:
– Good resistance to oil, fuel, and chemicals
– Suitable for both static and dynamic applications
– Medium hardness level (70A durometer) for balanced durability and flexibility

Cons:
– May not be suitable for high-temperature applications
– Not resistant to certain chemicals like ketones, esters, and chlorinated hydroca…

FKM O Rings, China NBR O Ring supplier

o ring 5mm Manufacturer & Supplier in China – Nanjing Hovoo …

Product Details: The 5mm O-ring is typically made from materials such as Nitrile (NBR), Viton, or other elastomers. Key specifications include an outer diameter of 5mm, with various inner diameters such as 3mm or 1.5mm. These O-rings are often used in sealing applications to prevent fluid or gas leaks. They are available in different hardness levels, such as 70 Shore A, and have specific tensile strength and elongation properties.

Pros:
– Effective sealing performance in various applications
– Available in different materials to suit different environments and uses
– High tensile strength and elongation properties for durability
– Compact size suitable for tight spaces

Cons:
– May degrade over time depending on the material and environmental conditions
– Requires proper installation to ensure effective sealing
– Can be affected by extreme temperatures or chemical exposure
– Limited lifespan compared to other sealing solutions

5 mm colored small rubber o ring for waterproof

Product Details: The 5 mm colored small rubber O-rings are made from silicone or rubber materials. The silicone O-rings have a hardness range of about 20~80 Shore A, while the rubber O-rings have a hardness range of about 30~90 Shore A. These O-rings are packaged in bags containing 5,000 pieces or cartons containing 30,000 pieces. The port of shipment is Shenzhen.

Pros:
– Waterproof properties make them suitable for applications requiring sealing agai…
– Available in various hardness levels to accommodate different application requir…
– Customizable in terms of material, size, and color.
– Packaged in large quantities, making them convenient for bulk orders.

Cons:
– Limited specific application details provided on the webpage.
– No information on the durability or lifespan of the O-rings under different cond…

5mm 10mm small flat clear silicone rubber o ring colored oval …

Custom O Ring Manufacturing in China with Quick Tooling …

Product Details: OBTiv Technology Co., LTD offers a wide range of rubber seal products, including O-Rings, X-Rings, Y-Rings, gaskets, PTFE bonded rubber seals, and more. They follow the IATF 16949 standards for automotive O-ring seals and use APQP and PPAP procedures. The company has expertise in enhancing rubber performance for low-temperature, conductivity, and chemical resistance. They provide customized high-performance rubber solutions for various industrial applications, including thermal management systems, fuel lines, air conditioning systems, and more. They support large O-Rings (diameter > 500mm), self-lubricated materials, and PTFE/FP coatings. They also offer quick sample and mass production services within 2-4 weeks[2].

Pros:
– Wide range of rubber seal products available
– Compliance with IATF 16949 standards for automotive applications
– Enhanced rubber performance for low-temperature, conductivity, and chemical resi…
– Customized high-performance rubber solutions
– Support for large O-Rings and self-lubricated materials
– Quick sample and mass production services within 2-4 weeks
– Good compatibility with various chemicals and fluids such as coolants, fuels, an…

Cons:
– Limited information on the specific durometer range and Shore A hardness
– No detailed information on the cost-effectiveness or pricing
– Dependence on specific manufacturing processes and material selection which migh…

Large silicone store o rings – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a sushi restaurant and the second restaurant project of the Rice n Roll Bistro family. It is located at 7484 W State St, Wauwatosa, WI 53213. The restaurant is known for its homemade, fresh, and tasty Asian food and sushi, with a modernized look and authentic taste from across Asia, especially Thailand and Japan.

Pros:
– Family-run restaurant with a passionate team
– Varieties of Asian food and sushi with modernized look and authentic taste
– Convenient location in Wauwatosa neighborhood

Cons:
– No specific product details available from the provided URL
– Potential concerns about the website’s legitimacy based on scam detector reviews

China Imported Iron Cut O Rings, Thickness: 5mm

Product Details: China Imported Iron Cut O Rings: Thickness – 5mm, Material – Iron, Shape – Round, Weight Per Item – 10gm, Diameter – 125mm, Color – Nickel, Minimum Order Quantity – 500 Piece

Pros:
– Available in stock
– Specific dimensions (thickness: 5mm, diameter: 125mm) suitable for precise appli…
– Iron material provides durability and strength
– Nickel color offers a sleek and corrosion-resistant finish

Cons:
– High minimum order quantity of 500 pieces, which may not be suitable for small-s…
– Limited information on the product’s performance under various environmental con…
– No details provided on the product’s resistance to chemicals, temperature, or ot…

PTFE Coated FKM O-rings With Black, Green Color

Product Details: PTFE coated or encapsulated O-rings consist of a core material, typically FKM (Viton®) or silicone, coated or encapsulated with a thin layer of PTFE. These O-rings offer excellent chemical resistance and a low-friction surface, enhancing operational flexibility and reducing wear in dynamic applications. They operate effectively in a wide temperature range, typically from -60°C to +260°C (-76°F to +500°F), and are available in various colors and durometers (50 to 90 Shore A). They are FDA-compliant and meet various regulatory standards such as USP Class VI and EU Reg. 1935/2004.

Pros:
– Excellent chemical resistance to a wide range of aggressive chemicals
– Low-friction surface reducing wear and enhancing operational flexibility
– Wide temperature operating range, suitable for both cryogenic and high-temperatu…
– FDA-compliant and meets various regulatory standards
– Available in various colors and durometers
– Maintains the elasticity of the elastomer core while adding PTFE benefits

Cons:
– Encapsulated O-rings are exclusively used in static applications as movement or…
– The fluoropolymer jacket’s slight stiffness may require custom application desig…
– Installation may require special techniques, such as using hot water or installa…

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

Product Details: Hongju produces high-quality silicone rubber O-rings and high-temperature O-ring seals. These O-rings are used in various applications such as engines, pumps, cylinders, connectors, and valves. The company offers both standard and custom-made O-rings, adhering to ISO3601 standards for dimensions and tolerances. They use high-quality raw materials and precision molds to ensure the products meet extreme use environments. The manufacturing process includes design, tool making, color mixing, compression molding, quality inspection, and packaging according to customer requirements.

Pros:
– High-quality silicone rubber O-rings with strong resistance to water, oil, and h…
– Customization capabilities to meet specific customer needs.
– Strict quality control over the production process.
– Compliance with international safety standards such as CE, SGS, REACH, and ROHS…
– Advanced equipment and well-trained staff ensure quality and reliability.
– Low Minimum Order Quantity (MOQ) and rapid prototyping available.

Cons:
– Importing from a Chinese manufacturer may involve longer shipping times.
– Factory inspections may be limited due to epidemic restrictions, though online i…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Factories in China

What materials are commonly used to manufacture O-rings in Chinese factories?

Chinese O-ring factories use a variety of materials, including nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), silicone, fluorosilicone (FVMQ), and fluorocarbon (FKM or Viton). Each material has its own set of properties and is suited for different applications, such as chemical resistance, high-temperature tolerance, or compatibility with specific fluids.

Can I customize the size and material of O-rings according to my specifications?

Yes, you can customize the size and material of O-rings. Many Chinese manufacturers, like Dongguan Hongju Silicone Rubber Products Co., Ltd. and Xiamen Flying Silicone Rubber Co., Ltd., offer OEM and ODM services. This means you can provide your design drawings, and they will produce O-rings according to your specifications, using materials such as silicone, NBR, EPDM, or Viton.

What is the minimum order quantity (MOQ) for O-ring orders in Chinese factories?

The minimum order quantity (MOQ) can vary depending on the manufacturer. Some factories, like Dongguan Hongju Silicone Rubber Products Co., Ltd., accommodate orders with low MOQs, while others may require larger quantities. For example, some suppliers on Alibaba may have MOQs as low as 10 pieces or as high as 1000 pieces.

Do Chinese O-ring manufacturers provide free samples for testing?

Yes, many Chinese O-ring manufacturers offer free samples for testing. For instance, Dongguan Hongju Silicone Rubber Products Co., Ltd. provides free samples to potential customers, allowing you to test the quality and suitability of their O-rings before placing a larger order.

What kind of certifications and quality control measures do Chinese O-ring factories adhere to?

Chinese O-ring factories often adhere to various international certifications and quality control measures. These include FDA, ISO, and ROHS certifications. Manufacturers like Shenzhen Anconn Rubber & Plastic Industrial Limited ensure their products meet standards such as SGS, ROHS, FDA, and Reach, and they have strict internal QC control processes in place to ensure customer satisfaction.