Are you looking for the best black rubber O-ring factories in China? If so, you’re in the right place. In this article, we’ll compare some of the top manufacturers, highlighting their strengths, product ranges, and what sets them apart in the industry. Let’s dive into the world of high-quality O-rings and find the perfect fit for your needs.

China O Rings Manufacturers and Suppliers

FKM O Rings, China NBR O Ring supplier

china manufacture black NBR 70 rubber o-ring with high …

Product Details: The Black NBR 70 Shore O-Ring is made from NBR (Nitrile Butadiene Rubber) material. It is used for hydraulic and pneumatic sealing applications. The O-ring has a hardness of 70 Shore A and operates within a temperature range of -30℃ to 100℃. It is suitable for various mediums including hydraulic oil, fire retardant liquid, and water. The product is available in standard and customized sizes and meets ISO 9001:2015 certification standards.

Pros:
– High sealing performance and durability
– Wide range of applications including hydraulic cylinders, pumps, and valves
– Operates effectively in both static and dynamic sealing conditions
– Resistant to high pressure and temperature
– Easy to install and maintain

Cons:
– Not recommended for insufficient lubrication during rotary motion
– Limited to specific temperature and pressure ranges
– Requires proper system lubrication and sealing clearance for optimal performance

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

Product Details: Savvy manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. The o-rings can be made from various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, Aflas, and more. 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 40 to 90, with 60-70 being the most common. O-rings are available in various colors and can be customized to meet specific needs. Savvy offers a large inventory of imperial and metric o-rings and

provides fast delivery options.

Pros:
– High-temperature resistance, especially for Silicone o-rings (-70°C to 220°C).
– Wide range of materials available, including FDA-grade Silicone for medical and…
– Good wear resistance, oil resistance, and corrosion resistance depending on the…
– Custom o-rings can be made at a low mold/tooling cost with fast delivery.
– Available in various colors and sizes to meet different application needs.

Cons:
– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p…
– High hardness o-rings can be inconvenient to install.
– Specific materials have limitations; for example, NBR o-rings may not be suitabl…

Large diameter store rubber o rings – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a family-run restaurant in the Wauwatosa neighborhood, known for its Asian cuisine, particularly from Thailand and Japan. The restaurant is an extension of the Rice n Roll Bistro family and is passionate about serving homemade, fresh, and tasty food with a modernized look and authentic taste.

Pros:
– Variety of Asian food and sushi options
– Modernized look and authentic taste
– Family-run restaurant with a passionate team
– Offers takeout, delivery, and reservations
– Extensive menu including Ramen, sushi, and other Asian dishes

Cons:
– Reservations not available on Friday and Saturday
– Table will be released if more than 5 minutes late
– Limited reservation availability for parties of less than 2

Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司

China Factory High Quality NBR O Ring Seals 70 Shore …

China Silicone O Ring

Product Details: Silicone O-rings are synthetic elastomers made from silicon, oxygen, hydrogen, and carbon, with various organic groups attached to silicon atoms. They are available in different types such as VMQ, PVMQ, and FVMQ, and can be formulated to meet specific requirements like FDA compliance, USP Class VI certification, and various color options. They can be produced through peroxide-curing or platinum-curing processes and are used in applications such as food and beverage production, medical devices, automotive, and aerospace.

Pros:
– Excellent heat, ozone, and corona resistance
– Good dielectric stability and resistance to many oils, chemicals, and solvents
– Retains flexibility at low temperatures
– Wide working temperature range from -175°F to 450°F
– Non-toxic and biocompatible, suitable for medical and food applications
– Excellent weather resistance to UV light, water, oxygen, and moisture
– Can be formulated to meet specific requirements such as insulation, conductivity…

Cons:
– Low tensile strength and wear and tear resistance
– Not suitable for dynamic sealing operations, recommended only for static applica…
– Does not perform well in concentrated acids and alkalis, steam over 120°C, petro…
– Requires lubrication to work correctly
– Platinum-cured silicone O-rings are more expensive due to higher production cost…

Viton O Ring Suppliers, Manufacturers, Factory

HNBR O Ring Seal OEM Manufacturer China

Product Details: GS# 5 Sealant is a general-purpose butyl tape that remains permanently flexible under expansion and contraction from joint movements. It has excellent sound and vibration absorption, is resistant to mildew and most soil chemicals, and withstands extreme temperature fluctuations. It is typically used in automotive sound deadening & body joint/seam sealing, telecommunications, window glazing, metal roofing, trailer & RV, pipe & vault, and HVAC applications.

Pros:
– Remains permanently flexible under expansion and contraction
– Excellent sound and vibration absorption
– Resistant to mildew and most soil chemicals
– Withstands extreme temperature fluctuations
– Versatile in various applications such as automotive, telecommunications, and HV…

Cons:
– May not be suitable for high-pressure applications
– Not ideal for applications requiring high chemical resistance beyond mildew and…
– Installation may require specific skills or tools

Comparison Table

Frequently Asked Questions (FAQs)

What materials are commonly used to make black rubber O-rings in China?

Black rubber O-rings in China are often made from several common materials. Nitrile Butadiene Rubber (NBR) is one of the most popular due to its good properties and low cost. Other materials include Fluorinated Rubber (FKM or Viton), Ethylene Propylene Diene Monomer (EPDM), and Silicone. Each material has its own strengths and is chosen based on the specific application and required performance characteristics.

Can I customize the size and shape of my O-rings?

Yes, you can customize the size and shape of your O-rings. Many Chinese manufacturers, such as Savvy and SWKS, offer custom O-ring production based on your specifications or design drawings. They have a wide range of molds and can produce both standard and non-standard sizes, including encapsulated O-rings, backup-rings, and X-rings.

What is the typical minimum order quantity (MOQ) for black rubber O-rings in China?

The minimum order quantity (MOQ) for black rubber O-rings can vary depending on the manufacturer. Some companies have relatively low MOQs, such as 10-100 pieces, while others may require larger orders, typically ranging from 500 to 1,000 pieces. It’s always a good idea to check with the specific manufacturer for their MOQ requirements.

How long does it take to receive my order of black rubber O-rings from China?

The delivery time for black rubber O-rings from China can vary. If the goods are in stock, you can expect delivery within 3-7 days. However, if the goods are not in stock, production and delivery can take around 15-20 days, depending on the quantity of your order. Some manufacturers also offer expedited shipping options to speed up the delivery process.

Do Chinese manufacturers offer free samples for testing before placing a large order?

Yes, many Chinese manufacturers offer free samples for testing. Companies like Dongguan Hongju Silicone Rubber Products and DMS Seals provide free samples to potential customers, although you may need to cover the cost of freight. This allows you to test the quality and performance of the O-rings before committing to a larger order.