Are you looking for the best EPDM O-ring factories in China? If so, you’re in the right place In this article, we’ll compare the top manufacturers, highlighting their strengths, product ranges, and what sets them apart. Let’s dive into the world of EPDM O-rings and find the perfect fit for your needs. From durability and resistance to weathering, to customized manufacturing and global supply, we’ll explore the key features that make these factories stand out. Whether you’re

China EPDM O Rings Manufacturers and Suppliers

Top 10 EPDM O-rings Manufacturers and Suppliers in China …

Product Details: Hongju Silicone Co, Ltd. is a professional manufacturer of rubber products located on the outskirts of Dongguan city in China, established in 1999. The company is well-equipped with a team of experienced professionals and offers manufacturing and design services for EPDM O-rings and other rubber products. They provide customized product manufacturing, using high-quality raw materials and precision molds to meet various extreme use environments. Their product range includes EPDM O-rings, rubber seals, gaskets, and more, complying with international safety standards like CE, SGS, REACH, and ROHS Directive requirements.

Pros:
– Excellent customer support
– Customized product manufacturing services
– High-quality EPDM O-rings
– Advanced machinery
– Strict quality control over the production process

Cons:
– None explicitly mentioned for Hongju Silicone Co, Ltd.

EPDM O-Rings, EPR/Ethylene Propylene O-Rings Manufacturer

Product Details: EPDM o-rings are made of EPDM rubber, a terpolymer of ethylene, propylene, and non-conjugated dienes. They have a temperature range of -50°C (-58°F) to 150°C (302°F). The durometer hardness range is Shore A 40-90, with a standard hardness of Shore A 70. These o-rings are available in various colors, including black, and can be manufactured in round, square, rectangular, or custom shapes. They are commonly used in high-temperature water vapor environments, sanitary equipment, refrigerators, and refrigeration equipment. Standard sizes include AS 568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401. The shelf life is typically 5-10 years[2].

Pros:
– Excellent resistance to oxidation, ozone, and corrosion.
– Good compatibility with glycol-based brake fluid and various refrigerants.
– Resistant to weathering, aging, and water-based chemicals.
– Durable in outdoor and low-temperature environments.
– Easy to manufacture for specialized requirements.

Cons:
– Not recommended for use with oils, fuels, or solvents as they can cause degradat…
– May require lubrication with compatible non-petroleum-based greases or water-bas…
– Sulfur-cured EPDM has lower temperature resistance compared to peroxide-cured EP…

China Rubber O-Ring Seals, different size and material oring …

Product Details: O-rings are toroidal elastomeric sealing devices designed to prevent the passage of fluids or gases between two mating surfaces under static or dynamic conditions. They are available in various materials such as Nitrile (Buna-N), Fluorocarbon (Viton), Ethylene-Propylene (EPDM), Silicone, and others, each with different temperature and chemical resistance properties. O-rings comply with standardized dimensional parameters like AS568 and ISO 3601.

Pros:
– Seal over a wide range of pressure, temperature, and tolerance.
– Ease of service with no smearing or retightening required.
– No critical torque on tightening, reducing the risk of structural damage.
– Require very little room and are light in weight.
– Can be reused in many cases.
– Cost-effective compared to other sealing solutions.

Cons:
– Material selection is critical and depends on the application environment.
– O-ring failure can be gradual but may not always be immediately identifiable.
– Surface preparation and gland design are crucial for optimal performance.
– Limited durability in high-speed rotating or reciprocating applications.

Ethylene Propylene (EPM, EPDM) O-Rings

Wholesale Colored EPDM O-rings for Sale

Product Details: EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM), a copolymer of ethylene and propylene with a small amount of a third monomer. They are available in a hardness range of 40 to 90 Shore A and can be manufactured in various colors including black, brown, green, white, rust, yellow, blue, red, orange, purple, and gray. The service temperature range is typically from -55°C to 125°C, or up to 150°C for peroxide-cured systems[1][2][4].

Pros:
– Excellent resistance to ozone, sunlight, and weathering
– Good flexibility at low temperatures
– Good chemical resistance to many dilute acids and alkalis, as well as polar solv…
– Good electrical insulation properties
– Suitable for hot water or steam applications up to 150°C
– Widely used in HVAC systems, automotive, and water treatment industries
– Resistant to water, steam, and certain chemicals

Cons:
– Not suitable for use with petroleum fluids (fuels, mineral oils, greases)
– Not recommended for use with oils, fuels, or solvents as they can cause degradat…
– Sulfur-cured EPDM may harden and have an inferior compression set in high temper…
– Peroxide-cured EPDM is more expensive and difficult to produce than sulfur-cured…

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

Product Details: Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used o-ring materials are NBR, FKM (Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM/Viton offers the best comprehensive performance and is used in high-standard sealing equipment. Silicone is often used in medical and food industries due to its high-temperature resistance, tastelessness, and non-toxicity. Other materials include EPDM, HNBR, CR, and Aflas. O-rings are available in various hardness levels, typically measured in Shore A units, ranging from 40 to 90, with 60-70 being

the most common. They also come in different colors, with standard colors recommended for cost and identification purposes.

Pros:
– High-temperature resistance: Silicone o-rings can operate from -70°C to 220°C.
– Good chemical resistance: Different elastomers have varying compatibility with c…
– Wide range of materials: Available in NBR, FKM/Viton, Silicone, EPDM, HNBR, CR,…
– Customizable: Savvy can produce custom o-rings at low mold/tooling costs and fas…
– Variety of applications: Suitable for medical, food, automotive, and other indus…

Cons:
– Hardness trade-offs: Lower hardness makes installation easier but increases the…
– Material limitations: Each material has specific limitations, such as NBR’s limi…

EPDM Waterproof O Ring

Product Details: EPDM O-rings are made from ethylene-propylene-diene monomer (EPDM) rubber, a terpolymer of ethylene, propylene, and a small amount of a diene monomer. They are available in various dimensions and durometers, typically ranging from 40 to 90 Shore A, with 70 Shore A being the most common. EPDM O-rings are usually black but can be manufactured in other colors. They have a temperature range of -65°F to 300°F (-51°C to 150°C), depending on the curing method, with peroxide-cured options offering higher temperature resistance than sulfur-cured ones.

Pros:
– Excellent resistance to ozone, UV radiation, and weathering.
– Good chemical resistance to water, steam, dilute acids, and alkalis.
– High flexibility at low temperatures.
– Suitable for outdoor and low-temperature environments.
– Ideal for applications in HVAC systems, automotive, and water treatment.
– Provide effective sealing and long-lasting performance.

Cons:
– Not recommended for use with oils, fuels, or solvents as they can cause degradat…
– Not resistant to petroleum products, mineral oils, greases, and hydrocarbon flui…
– May require lubrication with compatible non-petroleum-based greases or water-bas…

Top 10 China EPDM O-RING Manufacturers

Product Details: EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM) rubber, known for their excellent resistance to oxidation, ozone, and corrosion. They are used in high-temperature water vapor environments, sanitary equipment, and refrigeration equipment. Key features include a temperature range of -50°C to 150°C, durometer hardness range of Shore A 40-90, and standard sizes according to AS568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401 standards[3][4].

Pros:
– Excellent weather resistance, aging resistance, and ozone resistance
– Good chemical stability and compatibility with glycol-based brake fluid
– Low specific gravity and ability to absorb a large number of fillers and oils wi…
– Customizable sizes and shapes, with low mold/tooling costs and fast delivery
– Wide range of applications including high-temperature environments and sanitary…

Cons:
– May not be suitable for applications requiring high oil resistance, as EPDM has…
– Can be more expensive than some other rubber materials like NBR for certain appl…
– Limited compatibility with certain chemicals, which may require the use of other…

China Factory Rubber ORing Seals NBR FKM FPM EPDM …

Product Details: The China Factory Rubber O-Ring Seals are made from various materials including NBR, FKM, FPM, EPDM, PTFE, and PU. The hardness ranges from 30-90 Shore A. These o-rings are customizable in size and color. They are used in hydraulic applications and can withstand temperatures from -20°C to 250°C depending on the material. The pressure tolerance is up to 30MPa. The o-rings are packed in PE bags and cartons. The lead time varies from 10 days for small quantities to negotiable for larger orders[3].

Pros:
– Simple structure and compact installation
– Self-sealing effect with no need for periodic adjustment
– Strong adaptability and wide application
– Low manufacturing cost and convenient use
– Can provide sufficient sealing preload and compensate for wear
– Smooth surface with low frictional resistance

Cons:
– Large starting friction resistance when used for compression sealing
– Prone to accidents such as cutting, twisting, and breaking if used improperly
– Difficult to achieve zero leakage in dynamic seals
– May require protective backup rings and lubricating accessories in some applicat…

Comparison Table

Frequently Asked Questions (FAQs)

What are the main advantages of EPDM o-rings produced in Chinese factories?

EPDM o-rings from Chinese factories offer several key advantages. They have excellent resistance to oxidation, ozone, and corrosion, making them ideal for outdoor and high-temperature applications. These o-rings also exhibit good weather resistance, aging resistance, and chemical stability, and they are compatible with glycol-based brake fluids and various refrigerants. This makes them highly versatile for use in sanitary equipment, refrigeration systems, and other high-demand environments.

What are the common applications of EPDM o-rings in various industries?

EPDM o-rings are widely used in several industries due to their robust properties. You can find them in high-temperature water vapor environments, sanitary equipment, refrigerators, and refrigeration equipment. They are also used in automotive and aerospace sectors for seals, hoses, and other critical components. Their resistance to chemicals and extreme temperatures makes them a reliable choice for a variety of applications.

How do Chinese EPDM o-ring manufacturers ensure quality and reliability?

Chinese EPDM o-ring manufacturers often adhere to strict quality standards. Many of these factories are ISO 9001 certified, ensuring that the production processes meet international quality norms. They use high-quality raw materials and advanced manufacturing techniques such as injection molding and transfer molding. Additionally, these manufacturers provide free samples for testing and offer after-sales services to ensure customer satisfaction.

Can I customize EPDM o-rings according to my specific needs?

Yes, you can customize EPDM o-rings to fit your specific requirements. Chinese manufacturers like Dongguan Hongju Silicone Rubber Products Co., Ltd. and Savvy Rubber offer customization services where you can provide your design drawings, and they will turn them into mass-produced products. You can choose from various materials, sizes, and colors, and even request custom shapes and sizes beyond the standard specifications.

What is the typical price range and minimum order quantity (MOQ) for EPDM o-rings from Chinese factories?

The price range for EPDM o-rings from Chinese factories can vary but generally falls between $0.01 to $0.10 per piece, depending on the size, material, and quantity. The minimum order quantity (MOQ) can range from as low as 10 pieces to several thousand pieces, depending on the manufacturer. For example, some suppliers may have an MOQ of 100 to 500 pieces, while others might offer lower MOQs for certain types of o-rings.