Are you looking for the best nitrile 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 nitrile o-ring manufacturers in China, highlighting their strengths, product ranges, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

NBR O-Rings, Buna-N / Nitrile O-Rings – China Manufacturer

Product Details: NBR O-Rings, also known as Nitrile O-Rings, Buna-N O-Rings, or Perbunan O-Rings, are made by the copolymerization of acrylonitrile and butadiene. The acrylonitrile content varies from 18% to 50%. These O-Rings have a temperature range of -40°C (-40°F) to 120°C (248°F), with a durometer hardness range of Shore A 40-90, and a standard hardness of Shore A 70. They are available in various colors, with black being the standard, and come in round, square, rectangular, and custom shapes. The cross-section width ranges from 0.5 to 20 mm, and the inside diameter ranges from 0.7 to 2965 mm. They are widely

used in applications such as fuel tanks, lubricating oil tanks, and in fluid media like petroleum hydraulic oil, gasoline, and silicone oil.

Pros:
– Excellent resistance to petroleum products and hydrocarbon fuels.
– Good mechanical properties, including abrasion resistance and heat resistance.
– Wide applicability in various industries such as automotive, aerospace, and mach…
– Low cost and good performance, making them the most widely used rubber O-Rings.
– Superior compression set, tear, and abrasion resistance compared to most elastom…

Cons:
– Decreased low-temperature flexibility with higher acrylonitrile content.
– Not suitable for use in polar solvents such as ketones, ozone, nitrobenzene, and…
– Poor resistance to ozone, sunlight, or weather, requiring protection from direct…
– Should not be stored near electric motors or other ozone-generating equipment.

China O Rings Manufacturers and Suppliers

O-Rings | China – Products | Parker NA

Product Details: Parker O-rings are circular sealing elements with circular cross-sections, primarily used in static applications. They are specified by their inside diameter and come in various materials such as Nitrile (NBR), Fluorocarbon (FKM, FPM), Ethylene Propylene (EPDM), Hydrogenated Nitrile (HNBR), Silicone (VMQ), and others. Each material is tailored for specific applications: NBR for oils and gases, FKM for explosive decompression and oil & gas, EPDM for food & beverage and chemical processing, HNBR for automotive and heavy-duty applications, and Silicone for cold water and ozone resistance[5].

Pros:
– Wide range of materials to suit various applications, including oils, gases, hyd…
– Excellent chemical and temperature resistance depending on the material chosen.
– Ease of service with no smearing or retightening required.
– No critical torque on tightening, reducing the risk of structural damage.
– Compact and lightweight design.
– Cost-effective and reusable in many cases.
– Gradual failure mode that is easily identifiable.

Cons:
– Each material has specific compatibility limitations; for example, NBR is not co…
– Some materials, like Butyl rubber (IIR), have poor short-term rebound properties…
– Epichlorohydrin rubbers have limited compatibility with polar solvents and stron…
– Silicone O-rings have limited compatibility with mineral oil and grease.

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

Product Details: Product name: Manufacturer seal o-ring black NBR nitrile Buna-N o ring. Material: NBR, FKM, silicone, EPDM, FFKM, FEP/FPA, PTFE. Color: Black. Type: O-ring. Hardness: 70, 80, 90. Sizes: P, G, AS568 and others. Pressure: 0~5MPa. Temperature: -30℃ +100℃. Speed: 2m/s. Medium: Hydraulic oil, fire retardant liquid, water and others.

Pros:
– Double acting seals with effective sealing achieved by deformation of the O-Ring…
– Suitable for static sealing and recommended for better conditions in dynamic app…
– High surface tension like liquid under pressure, enhancing sealing performance.
– Manufactured by a company with over 10 years of experience in seals production a…

Cons:
– Not recommended for dynamic applications with insufficient lubrication during ro…
– Limited to a maximum pressure of 5MPa without a support ring.
– Maximum reciprocating speed is up to 0.5m/s, which may be restrictive for high-s…

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 sizes and custom-made O-rings to meet specific customer needs. The manufacturing process includes design, tool making, color mixing, compression molding, and quality inspection. The products comply with ISO 3601 standards and can be made from various materials including silicone, EPDM, fluoro rubber, Viton, and more. The company also provides options for liquid silicone rubber and ensures the products meet international safety standards like CE, SGS, REACH, and ROHS Directive requirements.

Pros:
– High-quality silicone rubber O-rings with strong resistance to water, oil, and h…
– Customization capabilities to meet specific customer requirements
– Strict quality control and compliance with international safety standards
– Wide range of materials available including silicone, EPDM, fluoro rubber, Viton…
– Advanced equipment and experienced staff ensure reliable quality and timely deli…
– Low minimum order quantity (MOQ) and rapid prototyping options

Cons:
– Importing from China may involve longer shipping times
– Factory inspection may be limited due to epidemic restrictions, though online in…
– Production cycle can vary based on quantity and complexity of products

High-quality O-ring Seals Manufacturer-Topa

Product Details: O-rings are round seals that create a mechanical seal between objects to prevent leakage of liquids and gases. They are available in various materials such as polyurethane, neoprene, silicone, Buna-N, PTFE, etc., depending on the environment, pressure, and temperature. O-rings are commonly used in gas cylinders, pumps, connectors, and other appliances across industries like agriculture, industry, oil and gas, food, and construction.

Pros:
– Stop foreign contaminants
– Maintain lubrication between objects
– Lighter in weight
– Easy to install and remove
– Resistant to abrasion
– Adaptable to extreme environments

Cons:
– Can leak due to incorrect installation, wrong size, excessive pressure, chemical…
– Require proper selection of size and material to function effectively
– May have limited lifespan depending on the material used

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

Product Details: Savvy Rubber manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. The o-rings are made from various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, Aflas, and more. The temperature range for these o-rings varies, for example, Silicone o-rings can operate 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. Savvy Rubber also offers custom o-ring manufacturing with low mold/tooling costs and fast delivery. They stock both imperial and metric o-rings and provide door-to-door courier

delivery at favorable express costs.

Pros:
– Wide range of materials available, including FDA-compliant Silicone for food and…
– High-temperature resistance, with some materials operating up to 220°C
– Low mold/tooling costs for custom o-ring orders
– Fast delivery options through door-to-door courier service
– Variety of hardness levels available to suit different applications
– Ability to produce o-rings in various colors for easy identification

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-commonly used colors may increase the cost and require a larger mi…

hydraulic rubber nitrile Buna-N NBR o ring … – DMS Seals

Product Details: The hydraulic rubber nitrile Buna-N NBR O-rings are made from NBR material and are available in hardness levels of 70 and 90 Shore A. They are black in color and come in various sizes, including P, G, AS568, and custom sizes. These O-rings are used for static sealing and can be applied in dynamic conditions under better circumstances. They are suitable for media such as hydraulic oil, fire retardant liquids, and water. The operating temperature range is -30°C to +100°C, and the maximum pressure is 0~5MPa. The O-rings have a speed limit of 2m/s and are not recommended for use

without sufficient lubrication during rotary motion[1][2][5].

Pros:
– High sealing efficiency due to the deformation of the O-ring section under press…
– Wide range of applications including excavators, loaders, graders, and other hea…
– Good mechanical properties and resistance to mineral-based oils and greases
– Available in various sizes and custom specifications
– Passed ISO 9001:2008 and TS 16949:2009 quality standards

Cons:
– Not recommended for dynamic applications without sufficient lubrication
– Limited to a maximum speed of 2m/s
– May not perform well in conditions with insufficient system lubrication
– Temperature range is limited to -30°C to +100°C

FKM O Rings, China NBR O Ring supplier

O Ring uggggg Black BUNA NBR Nitrile

Product Details: Family Pet Medical Center offers a wide range of medications and pet care products through their in-house pharmacy. This includes prescription medications, dog and cat food products, and specific prescription foods formulated for pets with chronic or acute conditions. The pharmacy allows for convenient pickup of prescriptions immediately after appointments.

Pros:
– Convenient pickup of prescriptions right after appointments
– Customized medication dosages based on pet size and specific needs
– Wide range of medications and pet care products available
– Prescription foods formulated for pets with specific dietary needs
– Client education on health, preventive medicine, and nutrition

Cons:
– No online ordering or delivery service mentioned for the Fort Lauderdale locatio…
– Limited information on pricing and affordability

Comparison Table

Frequently Asked Questions (FAQs)

What are Nitrile O-Rings and what are they made of?

Nitrile O-Rings, also known as NBR or Buna-N O-Rings, are made from a copolymer of acrylonitrile and butadiene. The acrylonitrile content, which ranges from 18% to 50%, determines their resistance to petrochemicals and fuels, but also affects their low-temperature performance.

What are the key properties and applications of Nitrile O-Rings?

Nitrile O-Rings are known for their good mechanical properties, abrasion resistance, and heat resistance. They are highly compatible with fuels, oils, gasoline, and solvents, making them ideal for use in fuel tanks, lubricating oil tanks, and various fluid media. However, they are not suitable for use with polar solvents like ketones or ozone.

What is the temperature range for Nitrile O-Rings?

Nitrile O-Rings can operate within a temperature range of -40°C to 120°C (-40°F to 248°F). This makes them versatile for a wide range of applications, from cold environments to moderately high-temperature settings.

Can Nitrile O-Rings be customized, and what sizes are available?

Yes, Nitrile O-Rings can be customized in various sizes and shapes. They come in standard sizes such as AS 568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401, but manufacturers can also produce custom sizes based on your specifications. The inside diameter can range from 0.7 mm to 2965 mm, and the cross-section width can range from 0.5 mm to 20 mm.

What is the shelf life of Nitrile O-Rings, and how should they be stored?

Nitrile O-Rings typically have a shelf life of 5 to 10 years. To maintain their quality, it is important to store them in a cool, dry place, away from direct sunlight and ozone. Proper storage helps preserve their mechanical properties and ensures they remain effective for their intended applications.