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

Top 10 EPDM O-rings Manufacturers and …

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 specifically mentioned for Hongju Silicone Co, Ltd.

China EPDM O Rings Manufacturers and Suppliers

Product Details: EPDM O-rings are made from ethylene propylene diene rubber, an elastomer prepared from ethylene, propylene, and a third diene monomer. They are FDA compliant and suitable for applications involving hot water, steam up to 300°F (149°C), and various water and municipal applications. They also resist ozone, UV, and weathering. The temperature range is typically from -65°F to 300°F (-54°C to 149°C), with standard hardness of 70 Shore A and standard color of black. EPDM O-rings are used in industries such as HVAC, automotive, water treatment, and household appliances[1][3][5].

Pros:
– Excellent resistance to heat, water, steam, alkali, mild acidic and oxygenated s…
– Good abrasion resistance and high elasticity, allowing reliable sealing even aft…
– Suitable for outdoor and low-temperature environments, making them ideal for dem…
– Resistant to UV, ozone, and weathering, ensuring long-lasting seals in challengi…
– Food and drinking water suitability with industry-specific approvals

Cons:
– Not recommended for use with petroleum-based oils and greases, aliphatic and aro…
– Poor resistance to solvents, aromatic hydrocarbons, and liquefied petroleum gas…
– May require lubrication with compatible non-petroleum-based greases or water-bas…

Wholesale Colored EPDM O-rings for Sale

Product Details: EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM) rubber, a synthetic elastomer known for its versatility and reliability. They are typically black in color but can be manufactured in other colors. EPDM O-rings offer excellent resistance to weathering, ozone, and UV exposure, making them ideal for outdoor and low-temperature environments. They are widely used in industries such as HVAC systems, automotive, and water treatment. Standard EPDM O-ring temperature ranges are from -65°F to 300°F, with specialized formulations expanding this range. They are available in various hardness levels, typically ranging from 40 Shore A to 90 Shore A, with

70 Shore A being the most common[2][3][5].

Pros:
– Excellent resistance to weathering, ozone, and UV exposure
– Good chemical resistance to many dilute acids and alkalis, as well as polar solv…
– High flexibility at low temperatures
– Good electrical insulation properties
– Durable and reliable in outdoor and low-temperature environments
– Versatile and suitable for various static and dynamic applications

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 can be prone to hardening and have an inferior compression set…
– Not suitable for applications involving aliphatic and aromatic hydrocarbons, di-…

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 Piece/Pieces per Month. Packaging: Inner is plastic bag, outer is carton, or custom as per your requirement. Place of Origin: China Ningbo. Certifications: ISO9001/TS16949, SGS, FDA, RoHS, REACH.

Pros:
– Wide range of materials available (NBR, FKM, Silicone, EPDM, HNBR, CR) to suit v…
– High temperature and chemical resistance.
– Customizable colors and sizes.
– Compliant with multiple certifications (ISO9001/TS16949, SGS, FDA, RoHS, REACH).
– Experienced quality control and assurance system.
– OEM and ODM options available.

Cons:
– Minimum Order Quantity (MOQ) of 5,000 pieces may be a barrier for small orders.
– Lead time depends on the number of products, which could be variable and potenti…

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 not be as effective in high-pressure applications as other materials like FK…
– Limited compatibility with certain chemicals compared to other elastomers

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 known for their excellent resistance to ozone, sunlight, and weathering. The standard temperature range for EPDM O-rings is typically from -65°F to 300°F (-51°C to 150°C), although specialized formulations can extend this range. They are usually black and have a durometer hardness ranging from 40 to 90 Shore A, with 70 Shore A being the most common. EPDM O-rings are widely used in industries such as HVAC, automotive, and water treatment due to their durability and

resistance to water, steam, and certain chemicals.

Pros:
– Excellent resistance to ozone, sunlight, and weathering
– Good flexibility at low temperatures
– Resistant to water, steam, and certain acids and bases
– Suitable for outdoor and low-temperature environments
– Good balance between flexibility and durability
– Effective in hydraulic and pneumatic systems

Cons:
– Not recommended for use with oils, fuels, or solvents
– Not resistant to petroleum products (mineral oils, greases, and fuels)
– Not resistant to hydrocarbon fluids
– May require lubrication with non-petroleum-based greases or water-based solution…

NBR/EPDM/CR/FKM/SILICONE custom rubber O Ring …

Product Details: Silicone O-rings are made from 1200-70 silicone, with a durometer of 70 and a brick red color. They have a temperature range of -50°C to 230°C. These O-rings are available in various sizes and can be compounded to meet FDA, USP Class VI, USDA, 3-A, and Canada AG standards. They are known for their excellent heat and compression resistance, flexibility, and good electrical insulation properties.

Pros:
– Excellent heat and compression resistance
– Good flexibility and fatigue life
– Strong ozone and UV radiation resistance
– Physiologically neutral and insulating properties
– Wide temperature range from -50°C to 230°C
– Can be compounded to meet various regulatory standards

Cons:
– Low tensile strength and poor abrasion resistance
– Not recommended for dynamic applications
– High gas permeability
– Not resistant to concentrated solvents, oils, acids, or alkalis
– Not suitable for applications involving superheated water or steam over 250°F
– Poor wear resistance and short-term resilience

FKM O Rings, China NBR O Ring supplier

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 FDA compliance, tastelessness, non-toxicity, and resistance to high temperatures and severe cold. The temperature range for these o-rings varies, with Silicone o-rings operating from -70°C to 220°C. The hardness of o-rings is measured in

Shore A, typically ranging from 40 to 90, with Shore A 70 being commonly used. O-rings are available in various colors and can be customized to meet specific needs.

Pros:
– High-temperature resistance, especially for Silicone o-rings
– Good chemical resistance depending on the material chosen
– Wide range of materials available to suit different applications
– Customizable sizes, shapes, and colors
– Low mold/tooling cost for custom o-rings
– Fast delivery options

Cons:
– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p…
– High hardness o-rings can be inconvenient to install
– Unique colors may increase cost and require a larger MOQ with longer delivery ti…

China EPDM O Ring Manufacturer,Supplier

Product Details: EPDM O-rings are made from ethylene-propylene-diene monomer (EPDM) rubber, a synthetic elastomer known for its versatility and reliability. They are typically black and have a durometer range of 40 to 90 Shore A, with 70 Shore A being the most common. EPDM O-rings are resistant to ozone, UV radiation, water, steam, and various chemicals, including dilute acids and alkalis. They are suitable for a wide temperature range, usually from -65°F to 300°F (-51°C to 150°C), depending on the curing method. Peroxide-cured EPDM O-rings offer better heat resistance and lower compression set compared to sulfur-cured ones.

Pros:
– Excellent resistance to ozone, UV radiation, and weathering
– Good chemical resistance to water, steam, dilute acids, and alkalis
– Good flexibility at low temperatures
– Suitable for outdoor and low-temperature environments
– Effective in hydraulic and pneumatic systems, HVAC, automotive, and water treatm…
– Balanced hardness and elasticity, especially with 70 Shore A durometer

Cons:
– Not recommended for use with oils, fuels, or solvents
– Not resistant to petroleum products, mineral oils, greases, and hydrocarbon flui…
– May require lubrication with non-petroleum-based greases or water-based solution…
– Sulfur-cured EPDM can harden and have an inferior compression set at high temper…

Comparison Table

Company	Product Details	Pros	Cons	Website
Top 10 EPDM O-rings Manufacturers and …	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 specifically mentioned for Hongju Silicone Co, Ltd.	hongjusilicone.com
China EPDM O Rings Manufacturers and Suppliers	EPDM O-rings are made from ethylene propylene diene rubber, an elastomer prepared from ethylene, propylene, and a third diene monomer. They are FDA co…	– Excellent resistance to heat, water, steam, alkali, mild acidic and oxygenated s… – Good abrasion resistance and high elasticity, allowing reliabl…	– Not recommended for use with petroleum-based oils and greases, aliphatic and aro… – Poor resistance to solvents, aromatic hydrocarbons, and liquef…	www.svks-rubberseal.com
Wholesale Colored EPDM O-rings for Sale	EPDM O-rings are made from Ethylene Propylene Diene Monomer (EPDM) rubber, a synthetic elastomer known for its versatility and reliability. They are t…	– Excellent resistance to weathering, ozone, and UV exposure – Good chemical resistance to many dilute acids and alkalis, as well as polar solv… – H…	– Not recommended for use with oils, fuels, or solvents as they can cause degradat… – May require lubrication with compatible non-petroleum-based gr…	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) to suit v… – High temperature and chemical resistance. – Customizable color…	– Minimum Order Quantity (MOQ) of 5,000 pieces may be a barrier for small orders. – Lead time depends on the number of products, which could be variab…	www.king-rubber.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 not be as effective in high-pressure applications as other…	www.nosincc.com
EPDM Waterproof O Ring	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….	– Excellent resistance to ozone, sunlight, and weathering – Good flexibility at low temperatures – Resistant to water, steam, and certain acids and ba…	– Not recommended for use with oils, fuels, or solvents – Not resistant to petroleum products (mineral oils, greases, and fuels) – Not resistant to hy…	www.svks-rubberseal.com
NBR/EPDM/CR/FKM/SILICONE custom rubber O Ring …	Silicone O-rings are made from 1200-70 silicone, with a durometer of 70 and a brick red color. They have a temperature range of -50°C to 230°C. These…	– Excellent heat and compression resistance – Good flexibility and fatigue life – Strong ozone and UV radiation resistance – Physiologically neutral a…	– Low tensile strength and poor abrasion resistance – Not recommended for dynamic applications – High gas permeability – Not resistant to concentrated…	m.bestsuppliers.com
FKM O Rings, China NBR O Ring supplier				www.o-ringsseals.com
O-Rings, Rubber Seals – Best China Manufacturer & Supplier	Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used o-ring mat…	– High-temperature resistance, especially for Silicone o-rings – Good chemical resistance depending on the material chosen – Wide range of materials a…	– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p… – High hardness o-rings can be inconvenient to install – Unique…	savvyrubber.com
China EPDM O Ring Manufacturer,Supplier	EPDM O-rings are made from ethylene-propylene-diene monomer (EPDM) rubber, a synthetic elastomer known for its versatility and reliability. They are t…	– Excellent resistance to ozone, UV radiation, and weathering – Good chemical resistance to water, steam, dilute acids, and alkalis – Good flexibility…	– Not recommended for use with oils, fuels, or solvents – Not resistant to petroleum products, mineral oils, greases, and hydrocarbon flui… – May re…	www.yodarubber.com

Frequently Asked Questions (FAQs)

Frequently Asked Questions About EPDM O-Ring Factories in China

What materials do EPDM O-ring factories in China typically use?

EPDM O-ring factories in China often use a variety of rubber materials, but EPDM (Ethylene Propylene Diene Monomer) is the primary focus. However, they also produce O-rings from other materials like NBR, FKM, Silicone, and HNBR, each suited for different applications and working conditions.

How do I choose the right EPDM O-ring manufacturer in China?

When choosing an EPDM O-ring manufacturer, consider factors such as product quality, industry experience, and customer support. Look for manufacturers with certifications like ISO 9001, ISO 14001, and IATF16949. Also, check their reputation, the range of products they offer, and their ability to provide customized solutions.

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

The delivery time for EPDM O-rings from Chinese manufacturers can vary, but most offer relatively quick turnaround times. Standard delivery times are usually between 7-15 days, depending on the shipping method chosen, such as express, air, or sea. Some manufacturers also offer expedited shipping options to meet urgent needs.

Can Chinese EPDM O-ring manufacturers provide customized products?

Yes, many Chinese EPDM O-ring manufacturers offer customized product services. They can produce O-rings in various sizes, shapes, and colors based on your specific requirements. Some manufacturers also provide design assistance and can create products from your drawings or samples, making it easy to get exactly what you need.

What kind of certifications and quality assurances can I expect from Chinese EPDM O-ring manufacturers?

Reputable Chinese EPDM O-ring manufacturers often hold several certifications, including ISO 9001 for quality management, ISO 14001 for environmental management, and IATF16949 for automotive quality management. They also conduct vigorous testing of their products to ensure quality and reliability, and some collaborate with universities and research institutions to continuously improve their services.