Are you looking for the best EPDM 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 EPDM O-ring factories in China, highlighting their strengths, services, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

China EPDM O Rings Manufacturers and Suppliers

Product Details: EPDM O-rings are made from ethylene propylene diene monomer (EPDM) rubber, a copolymer of ethylene and propylene with a small amount of a third monomer (usually a diene) for vulcanization. They are available in a hardness range of 40 to 90 Shore A, with 70 Shore A being the most common. EPDM O-rings can operate in a temperature range from -55°C to 125°C, or up to 150°C for peroxide-cured systems. They are available in various colors and are widely used in applications such as phosphate-ester based hydraulic fluids, glycol-based brake fluids, hot water, and steam systems.

Pros:
– Excellent resistance to ozone, sunlight, and weathering.
– Good flexibility at low temperatures.
– Good chemical resistance to many dilute acids and alkalis, polar solvents, and w…
– Good electrical insulation properties.
– Suitable for outdoor and low-temperature environments.
– Resistant to steam up to 204.4°C (400°F).
– Versatile and reliable for various static and dynamic applications.

Cons:
– Not suitable for petroleum fluids (fuels, mineral oils, greases).
– Not recommended for use with aliphatic and aromatic hydrocarbons, di-ester based…
– Sulfur-cured EPDM O-rings can harden and have an inferior compression set at hig…
– Peroxide-cured EPDM O-rings are more expensive and difficult to produce.

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 mentioned specifically for Hongju Silicone Co, Ltd.

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 for vulcanization. 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
– Durable and reliable in outdoor and low-temperature environments
– 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 can harden and have an inferior compression set at high temper…
– Peroxide-cured EPDM is more expensive and difficult to produce than sulfur-cured…

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

Product Details: Product name: O Ring / O-Ring Seals. Color: Any color, according to customer requirements. Hardness: 40-90 Shore A. Material: NBR, FKM, Silicone, EPDM, HNBR, CR. Working temperature: -48~+260°C. Resistance: Oil, High Temperature, Ozone, Water, Chemical Resistant. Supply Ability: 10,000,000 pieces per month. Packaging: Inner plastic bag, outer carton, or custom. Place of Origin: China Ningbo. Certifications: ISO9001/TS16949, SGS, FDA, RoHS, REACH.

Pros:
– Wide range of materials available (NBR, FKM, Silicone, EPDM, HNBR, CR).
– High temperature and chemical resistance.
– Customizable colors and sizes.
– Compliant with various certifications (ISO9001/TS16949, SGS, FDA, RoHS, REACH).
– High supply ability with 10,000,000 pieces per month.
– Experienced quality control and assurance system.

Cons:
– Minimum Order Quantity (MOQ) of 5,000 pieces.
– Lead time depends on the number of products, which could be variable.

Epdm Rubber O Rings 2024

Product Details: The EPDM Rubber O-Rings are customized for various applications, including switch gear and food machinery. These O-Rings are made from high-quality EPDM (Ethylene Propylene Diene Monomer) rubber, known for its excellent resistance to heat, ozone, and chemicals. They are available in different sizes and can be purchased wholesale from China. The product is suitable for use in harsh environments and is compliant with food-grade standards.

Pros:
– Excellent heat, ozone, and chemical resistance
– Suitable for harsh environments
– Compliant with food-grade standards
– Available in various sizes
– Can be purchased wholesale

Cons:
– Limited information on specific temperature ranges
– May not be suitable for applications requiring high oil resistance

China Factory Rubber ORing Seals NBR FKM FPM EPDM …

EPDM O-Rings – 90 Shore A

Product Details: EPDM O-rings with a hardness of 90 Shore A are made from Ethylene Propylene Diene Monomer (EPDM) rubber. These O-rings are available in various dimensions, such as 116 mm x 3 mm, 119.3 mm x 5.7 mm, and 182 mm x 2.5 mm. They are primarily black but can be manufactured in other colors. EPDM O-rings are known for their resistance to weathering, ozone, and UV exposure, making them suitable for outdoor and low-temperature environments. They are used in industries like HVAC systems, automotive, and water treatment. The temperature range for these O-rings is typically from -65°F to 300°F, depending

on the curing process, which can be either peroxide or sulfur curing[1][3][4].

Pros:
– Exceptional resistance to weathering, ozone, and UV exposure.
– Resistant to water, steam, and certain chemicals, particularly in low-temperatur…
– Suitable for higher pressure applications and resistant to steam and explosive d…
– Versatile and reliable in outdoor and low-temperature environments.
– Used in demanding sealing applications in industries like HVAC systems, automoti…

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 a lower temperature range compared to peroxide-cured EPDM.

FKM NBR EPDM China Rubber O Ring

Product Details: The FKM, NBR, EPDM China Rubber O-Rings are manufactured by Tianjin SWKS Technology & Development Co., Ltd. These O-rings are made from various materials including Silicone Rubber/VMQ/SI, FKM (Viton), NBR, and EPDM. The hardness range is from 30 Shore A to 90 Shore A. They are available in standard sizes according to AS 568, BS 4518, GB/T 3452.1, JIS B2401, and other standards, as well as customized sizes. The minimum production size is 0.5mm (inside diameter) × 0.5mm (wire diameter), and the maximum production size is 1400mm (inside diameter) × 50mm (wire diameter). The working temperature range is -70℃ to

+300℃. These O-rings are resistant to heat, aging, UV, friction, and deformation.

Pros:
– Simple and easy to install due to their small space requirements.
– Provide long-lasting sealing effects in both static and dynamic applications as…
– Resistant to heat, aging, UV, friction, and deformation.
– Wide range of materials and sizes available, including standard and customized o…
– High temperature resistance up to +300℃ and low temperature resistance down to -…

Cons:
– Not recommended for vacuum applications due to high gas permeability.
– Not suitable for dynamic applications involving certain hydraulic fluid additive…
– Specific materials may have limitations, such as silicone and fluorosilicones be…

Perfluoroelastomer FFKM O ring Manufacturer

Product Details: FFKM O-rings are made of perfluoroelastomer compounds with a higher fluorine content than FKM fluoroelastomers. They are known for their excellent resistance to chemical corrosion, organic and inorganic acids, alkali, ester, ether, ketone, aldehyde, superheated water, and steam. The maximum operating temperature is 230 °C (446 °F), and they can be manufactured into various forms such as O-rings, diaphragms, gaskets, rubber strips, and rubber plates. Key mechanical properties include a hardness of Shore A 78, 100% modulus of 9.4 MPa, tensile strength of 15.9 MPa, elongation at break of 130%, and a compression set of 20.7% after 70 hours at

204 °C[1].

Pros:
– Highest temperature resistance among all rubber O-ring and gasket materials, up…
– Excellent chemical resistance to a wide range of aggressive chemicals, including…
– High thermal, oxidative, and chemical stability due to carbon-fluorine bonds[1][…
– Long service life and reliability in dynamic and static applications[3] – Low off-gassing and extractable levels, making them suitable for clean and criti…

Cons:
– Poor low temperature performance[3] – Significantly more costly than standard FKM materials[3] – Lower tensile strength compared to some other elastomers[4]

Top 10 China EPDM O-RING Manufacturers

Product Details: EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM) rubber, known for excellent resistance to oxidation, ozone, and corrosion. They operate within a temperature range of -50°C to 150°C and have a durometer hardness range of Shore A 40-90. These O-rings are available in various sizes, including standard sizes like AS568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401. They are commonly used in high-temperature water vapor environments, sanitary equipment, and refrigeration equipment[3][4][5].

Pros:
– Excellent resistance to oxidation, ozone, and corrosion
– Wide operating temperature range (-50°C to 150°C)
– Good compatibility with glycol-based brake fluid and various refrigerants
– Available in custom sizes and shapes
– Low cost compared to other materials like FKM
– High quality and durable

Cons:
– Not suitable for applications involving petroleum-based fluids due to limited ch…
– May require larger MOQ and longer delivery time for custom colors
– Not as comprehensive in performance as FKM/Viton materials

Comparison Table

Company	Product Details	Pros	Cons	Website
China EPDM O Rings Manufacturers and Suppliers	EPDM O-rings are made from ethylene propylene diene monomer (EPDM) rubber, a copolymer of ethylene and propylene with a small amount of a third monome…	– Excellent resistance to ozone, sunlight, and weathering. – Good flexibility at low temperatures. – Good chemical resistance to many dilute acids and…	– Not suitable for petroleum fluids (fuels, mineral oils, greases). – Not recommended for use with aliphatic and aromatic hydrocarbons, di-ester based…	www.svks-rubberseal.com
Top 10 EPDM O-rings Manufacturers and Suppliers in China …	Hongju Silicone Co, Ltd. is a professional manufacturer of rubber products located on the outskirts of Dongguan city in China, established in 1999. Th…	– Excellent customer support – Customized product manufacturing services – High-quality EPDM O-rings – Advanced machinery – Strict quality control ove…	– None mentioned specifically for Hongju Silicone Co, Ltd.	hongjusilicone.com
Wholesale Colored EPDM O-rings for Sale	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 for v…	– Excellent resistance to ozone, sunlight, and weathering – Good flexibility at low temperatures – Good chemical resistance to many dilute acids and a…	– Not suitable for use with petroleum fluids (fuels, mineral oils, greases) – Not recommended for use with oils, fuels, or solvents as they can cause…	www.sealsmanufacturer.com
China Rubber O-Ring Seals, different size and material oring …	Product name: O Ring / O-Ring Seals. Color: Any color, according to customer requirements. Hardness: 40-90 Shore A. Material: NBR, FKM, Silicone, EPDM…	– Wide range of materials available (NBR, FKM, Silicone, EPDM, HNBR, CR). – High temperature and chemical resistance. – Customizable colors and sizes….	– Minimum Order Quantity (MOQ) of 5,000 pieces. – Lead time depends on the number of products, which could be variable.	www.king-rubber.com
Epdm Rubber O Rings 2024	The EPDM Rubber O-Rings are customized for various applications, including switch gear and food machinery. These O-Rings are made from high-quality EP…	– Excellent heat, ozone, and chemical resistance – Suitable for harsh environments – Compliant with food-grade standards – Available in various sizes…	– Limited information on specific temperature ranges – May not be suitable for applications requiring high oil resistance	elginaudiology.com
China Factory Rubber ORing Seals NBR FKM FPM EPDM …				m.bestsuppliers.com
EPDM O-Rings – 90 Shore A	EPDM O-rings with a hardness of 90 Shore A are made from Ethylene Propylene Diene Monomer (EPDM) rubber. These O-rings are available in various dimens…	– Exceptional resistance to weathering, ozone, and UV exposure. – Resistant to water, steam, and certain chemicals, particularly in low-temperatur……	– Not recommended for use with oils, fuels, or solvents as they can cause degradat… – May require lubrication with compatible non-petroleum-based gr…	www.o-ring-stocks.eu
FKM NBR EPDM China Rubber O Ring	The FKM, NBR, EPDM China Rubber O-Rings are manufactured by Tianjin SWKS Technology & Development Co., Ltd. These O-rings are made from various materi…	– Simple and easy to install due to their small space requirements. – Provide long-lasting sealing effects in both static and dynamic applications as….	– Not recommended for vacuum applications due to high gas permeability. – Not suitable for dynamic applications involving certain hydraulic fluid addi…	www.svks-rubberseal.com
Perfluoroelastomer FFKM O ring Manufacturer	FFKM O-rings are made of perfluoroelastomer compounds with a higher fluorine content than FKM fluoroelastomers. They are known for their excellent res…	– Highest temperature resistance among all rubber O-ring and gasket materials, up… – Excellent chemical resistance to a wide range of aggressive che…	– Poor low temperature performance[3] – Significantly more costly than standard FKM materials[3] – Lower tensile strength compared to some other elast…	www.jst-seals.com
Top 10 China EPDM O-RING Manufacturers	EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM) rubber, known for excellent resistance to oxidation, ozone, and corrosion. They ope…	– Excellent resistance to oxidation, ozone, and corrosion – Wide operating temperature range (-50°C to 150°C) – Good compatibility with glycol-based b…	– Not suitable for applications involving petroleum-based fluids due to limited ch… – May require larger MOQ and longer delivery time for custom col…	www.nosincc.com

Frequently Asked Questions (FAQs)

Frequently Asked Questions About EPDM O-Rings in Chinese Factories

What are the main advantages of EPDM O-rings?

EPDM O-rings are highly valued for their excellent resistance to heat, ozone, weathering, and chemicals. This makes them ideal for use in various industries such as automotive, aerospace, and industrial applications where durability and reliability are crucial.

Can I customize the size and material of EPDM O-rings?

Yes, you can customize the size and material of EPDM O-rings. Many Chinese manufacturers, such as Hongju Silicone Co., Ltd. and Tianjin King Seal Co., Ltd., offer OEM and ODM services, allowing you to specify the exact size, material, and color of the O-rings according to your needs.

What certifications should I look for in an EPDM O-ring manufacturer?

When selecting an EPDM O-ring manufacturer, look for certifications such as ISO 9001, ISO 14001, IATF 16949, and other relevant standards like RoHS, REACH, and FDA. These certifications ensure that the products meet international quality and safety standards.

How do manufacturers ensure the quality of EPDM O-rings?

Manufacturers ensure the quality of EPDM O-rings through rigorous testing and quality control processes. For example, companies like Xiamen Hongsen Shengshi Technology Co., Ltd. conduct vigorous testing of all products before delivery, and they have experienced quality control teams to ensure high-quality products.

What is the typical lead time for ordering EPDM O-rings from Chinese manufacturers?

The lead time for ordering EPDM O-rings can vary depending on the quantity and complexity of the order. Generally, it can range from 7-15 days for standard orders. However, for larger or customized orders, the lead time may be longer and will depend on the manufacturer’s production schedule and your specific requirements.