Are you looking for the best FKM O-ring factories in China to meet your sealing needs? With numerous options available, it can be daunting to choose the right one. In this article, we will compare some of the top FKM O-ring manufacturers in China, highlighting their strengths, product offerings, and what sets them apart. Let’s dive in and find the perfect fit for your requirements.

FKM O Rings, China NBR O Ring supplier

FKM O Ring Viton Rubber Oring

Product Details: Viton® / FKM O-rings are made from fluorocarbon rubber, known for their high performance. They are available in various types such as A-type (66% fluorine), B-type (67-68.5% fluorine), F-type (70% fluorine), GLT-type (improved low temperature flexibility), and ETP-type (excellent chemical resistance). These O-rings come in standard AS568 and metric sizes, as well as custom sizes. They are used in applications requiring high temperature resistance, chemical compatibility, and low compression set.

Pros:
– Excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, f…
– Wide temperature range: -26°C to 232°C in static applications and -15°C to 200°C…
– Low compression set and low gas permeability.
– Exceptional resistance to aging, chemical, and ozone attacks.
– Available in various colors and specialty formulations for specific needs such a…

Cons:
– Not recommended for use with steam, amines, anhydrous ammonia, ketones (MEK, ace…
– Incompatible with glycol-based brake fluids, methanol, ammonia gas, alkalis, and…
– Service life can be shortened at high temperatures above 232°C.
– Special care is needed for storage and handling to maintain shelf life according…

FKM Rubber Thick Seal O Ring

Product Details: FKM/Viton O-rings are made from a high-performance fluoropolymer elastomer. They are available in various types, including general type (A-TYPE, 66% fluorine), middle fluorine content type (B-, GBL-TYPE, 67~68.5% fluorine), high fluorine content type (F-, GF-TYPE, 70% fluorine), and types with improved low temperature flexibility (GLT-, GFLT) and enhanced chemical resistance (Viton® ETP Extreme). The standard durometer (hardness) ranges from 50 to 90 Shore A. These O-rings are used in static and dynamic applications with a temperature range of -15°C to 232°C (static) and -15°C to 200°C (dynamic), with some types extending to -40°C or -50°C and up to 275°C or

527°F for short periods.

Pros:
– Excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, f…
– Wide temperature range: -50°C to +205°/230°C (-15°F to +400°/440°F).
– Low compression set and low gas permeability.
– Exceptional resistance to aging, chemical and ozone attacks.
– High durability in harsh environments, including resistance to acids, chlorinate…
– Versatile and suitable for various industries such as aerospace, automotive, and…

Cons:
– More expensive compared to other materials like nitrile.
– Full operation at high temperatures (e.g., 450°F) can shorten the parts’ lifetim…
– May require specific lubrication based on the application.

China Supplier, Wholesale – FKM O Rings

Product Details: FKM O-rings are made from fluorocarbon rubber, a high-performance fluoroelastomer known for its excellent resistance to extreme temperatures, chemicals, and environmental conditions. They are commonly used in industries such as aerospace, automotive, and chemical processing. The standard temperature range for FKM O-rings is from -15°F to 400°F, although special formulations can extend this range. The hardness of FKM O-rings typically ranges from 55 Shore A to 95 Shore A, with 75 Shore A being the most common. They are available in various colors, including black, brown, and others, to meet specific application needs.

Pros:
– Excellent resistance to high temperatures up to 400°F (204°C) and low temperatur…
– Superior resistance to oils, fuels, lubricants, solvents, ozone, UV light, and w…
– High durability and long-lasting performance in harsh environments.
– Versatile and suitable for both static and dynamic applications.
– Wide range of hardness levels (55-95 Shore A) to meet specific sealing requireme…
– Compatibility with a broad range of chemicals and fluids, including petroleum oi…

Cons:
– Incompatible with certain substances such as amines, glycol-based brake fluids,…
– May require special formulations for extreme temperature conditions beyond the s…
– More expensive than some other elastomer materials like nitrile or EPDM.
– Limited shelf life if not stored properly according to AS5316 standards.

China NBR HNBR FKM PTFE O Ring Manufacturer

Product Details: O-rings are seals with a solid rubber material or PTFE and an O-shaped cross section. They are widely used in hydraulic and pneumatic transmission systems to prevent the leakage of liquid and gas media under static conditions. They can also be used as dynamic sealing elements for axial reciprocating motion and low-speed rotating motion. The materials available include NBR, HNBR, FKM, PTFE, and others. The working temperature range depends on the material, typically from -32 to +204°C. O-rings are effective and economical for both fixed seal and dynamic seal applications.

Pros:
– Effective and economical for both fixed seal and dynamic seal applications.
– Can be used in various conditions including oil, water, air, and gas.
– Available in different materials to suit different conditions.
– Prevents leakage of fluids effectively.
– Used in mechanical parts to ensure sealing under static and some dynamic conditi…

Cons:
– Limited by speed and pressure in dynamic sealing situations.
– Not suitable for all types of fluids (e.g., chlorinated hydrocarbons, ketones, e…
– Minimum order quantities are required unless the parts are stocked.

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 rubber, metal, and other materials, but rubber is the most commonly used. Popular rubber compounds include NBR, FKM (Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM/Viton offers 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 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 custom colors can be produced with the provision of standard RAL or Pantone color numbers.

Pros:
– High-temperature resistance: Silicone o-rings can operate from -70°C to 220°C.
– FDA compliance: Silicone o-rings are suitable for food and medical industries.
– Good chemical resistance: Different materials offer compatibility with various c…
– Wide range of applications: Suitable for static and dynamic sealing in various i…
– Customizable: Can be made in different sizes, shapes, and materials at low mold/…
– Fast delivery: Instant delivery via door-to-door courier services.

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

China O-Ring Kits Suppliers – NNK Oil Seal

Product Details: O-ring kit boxes are comprehensive sets containing various sizes of O-rings, designed to meet diverse sealing needs. These kits typically include a range of O-ring sizes, often organized in a hard-wearing storage box. The O-rings are made from different materials such as NBR (Nitrile), Silicone, FKM, EPDM, and HNBR, each suited for different applications and environments. The kits are widely used in industries for sealing joints in connectors, cylinders, pumps, and valves to prevent the leakage of liquids and gases. They are available in standard sizes such as AS568, metric, and inch sizes, and can be customized to fit specific

requirements[1][2][4].

Pros:
– Provides a wide range of O-ring sizes in one kit, making it versatile for variou…
– Made from high-quality materials to ensure superior sealing performance and dura…
– Customization options available to tailor the kit to specific needs.
– Enhances system efficiency by preventing leaks and reducing friction.
– Suitable for use in high-pressure environments where other seals might fail.

Cons:
– May not be suitable for safety-critical applications like automotive without pre…
– The cost can be higher compared to other sealing solutions, although the quality…
– Requires proper storage and handling to maintain the integrity of the O-rings.

Viton O Ring Suppliers, Manufacturers, Factory

High quality FKM material O-ring processing factory

Product Details: The custom material O-rings offered by Hebei Michu Technology Co., Ltd. are made from various materials including Rubber, PTFE, PU, and other custom materials. The colors available include black, green, yellow, red, blue, and other custom colors. The O-rings come in standard sizes as well as custom sizes. The minimum order quantity (MOQ) is 1000. Different materials have distinct properties: NBR is suitable for temperatures up to 110°C and down to -30°C, FKM up to 200°C and down to -20°C, EPDM up to 150°C and down to -40°C, VMQ up to 210°C and down to -60°C, HNBR up to 150°C

and down to -20°C, PU up to 80°C and down to -30°C, and FFKM up to 260°C and down to -25°C. Each material has varying levels of aging resistance, wear resistance, water resistance, and gasoline resistance.

Pros:
– Wide range of materials available to suit different applications
– Customizable sizes and colors to meet specific needs
– Fast delivery times for standard size O-rings
– High temperature and chemical resistance depending on the material chosen
– Suitable for various industries including automotive, hydraulic systems, aerospa…

Cons:
– Non-standard size O-rings require mold creation, which can delay production
– Minimum order quantity of 1000 may be a barrier for small-scale users
– Different materials have varying performance in terms of aging, wear, and chemic…

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 rubber O-ring and gasket materials, up to 6…
– Excellent chemical resistance to a wide range of aggressive chemicals, including…
– High thermal, oxidative, and chemical stability due to carbon-fluorine bonds[3] – Long service life and reliability in dynamic and static applications[3] – Low off-gassing and extractable levels, making them suitable for clean and sensi…
– Ideal for harsh chemical environments and critical applications in industries su…

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

Comparison Table

Company	Product Details	Pros	Cons	Website
FKM O Rings, China NBR O Ring supplier				www.o-ringsseals.com
FKM O Ring Viton Rubber Oring	Viton® / FKM O-rings are made from fluorocarbon rubber, known for their high performance. They are available in various types such as A-type (66% fluo…	– Excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, f… – Wide temperature range: -26°C to 232°C in static applications…	– Not recommended for use with steam, amines, anhydrous ammonia, ketones (MEK, ace… – Incompatible with glycol-based brake fluids, methanol, ammonia…	www.svks-rubberseal.com
FKM Rubber Thick Seal O Ring	FKM/Viton O-rings are made from a high-performance fluoropolymer elastomer. They are available in various types, including general type (A-TYPE, 66% f…	– Excellent resistance to high temperature, ozone, weather, oxygen, mineral oil, f… – Wide temperature range: -50°C to +205°/230°C (-15°F to +400°/4…	– More expensive compared to other materials like nitrile. – Full operation at high temperatures (e.g., 450°F) can shorten the parts’ lifetim… – May…	www.svks-rubberseal.com
China Supplier, Wholesale – FKM O Rings	FKM O-rings are made from fluorocarbon rubber, a high-performance fluoroelastomer known for its excellent resistance to extreme temperatures, chemical…	– Excellent resistance to high temperatures up to 400°F (204°C) and low temperatur… – Superior resistance to oils, fuels, lubricants, solvents, ozon…	– Incompatible with certain substances such as amines, glycol-based brake fluids,… – May require special formulations for extreme temperature condit…	www.o-ringsseals.com
China NBR HNBR FKM PTFE O Ring Manufacturer	O-rings are seals with a solid rubber material or PTFE and an O-shaped cross section. They are widely used in hydraulic and pneumatic transmission sys…	– Effective and economical for both fixed seal and dynamic seal applications. – Can be used in various conditions including oil, water, air, and gas….	– Limited by speed and pressure in dynamic sealing situations. – Not suitable for all types of fluids (e.g., chlorinated hydrocarbons, ketones, e… -…	www.jst-seals.com
O-Rings, Rubber Seals – Best China Manufacturer & …	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 b…	– High-temperature resistance: Silicone o-rings can operate from -70°C to 220°C. – FDA compliance: Silicone o-rings are suitable for food and medical…	– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p… – High hardness o-rings can be inconvenient to install. – Custom…	savvyrubber.com
China O-Ring Kits Suppliers – NNK Oil Seal	O-ring kit boxes are comprehensive sets containing various sizes of O-rings, designed to meet diverse sealing needs. These kits typically include a ra…	– Provides a wide range of O-ring sizes in one kit, making it versatile for variou… – Made from high-quality materials to ensure superior sealing pe…	– May not be suitable for safety-critical applications like automotive without pre… – The cost can be higher compared to other sealing solutions, al…	www.nokcn-seals.com
Viton O Ring Suppliers, Manufacturers, Factory				www.seal-china.com
High quality FKM material O-ring processing factory	The custom material O-rings offered by Hebei Michu Technology Co., Ltd. are made from various materials including Rubber, PTFE, PU, and other custom m…	– Wide range of materials available to suit different applications – Customizable sizes and colors to meet specific needs – Fast delivery times for st…	– Non-standard size O-rings require mold creation, which can delay production – Minimum order quantity of 1000 may be a barrier for small-scale users…	www.hbmichu.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 rubber O-ring and gasket materials, up to 6… – Excellent chemical resistance to a wide range of aggressive ch…	– Poor low temperature performance[3] – Significantly more costly than standard FKM materials[3] – Generally lower tensile strength compared to some o…	www.jst-seals.com

Frequently Asked Questions (FAQs)

Frequently Asked Questions About FKM O Ring Factories in China

What materials are commonly used by FKM O ring factories in China?

FKM O ring factories in China often use a variety of materials, including Fluorinated Rubber (FKM), also known as Viton, as well as other materials like Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), Hydrogenated Nitrile Butadiene Rubber (HNBR), and Silicone. These materials are chosen for their specific properties, such as resistance to high temperatures, oils, solvents, and chemicals.

What are the typical applications of FKM O rings produced in China?

FKM O rings produced in China are widely used in various industries, including electronics, medical equipment, food processing, automotive, shipbuilding, and military applications. They are particularly valued for their excellent resistance to high temperatures, oils, solvents, and chemicals, making them ideal for critical sealing applications.

What is the minimum order quantity (MOQ) for FKM O rings from Chinese manufacturers?

The minimum order quantity (MOQ) for FKM O rings can vary significantly depending on the manufacturer. Some factories may have a low MOQ of 10-100 pieces, while others may require orders of 500-5000 pieces or more. It’s always a good idea to check with the specific manufacturer for their MOQ requirements.

How long does it take to receive FKM O rings after placing an order with a Chinese manufacturer?

The delivery time for FKM O rings from Chinese manufacturers typically ranges from a few days to several weeks. For sample orders, it usually takes about 1 week, while production orders can take 1-2 weeks after the sample is approved. If custom molds are involved, the delivery cycle can be longer, usually around 10 days for mold production.

Do Chinese FKM O ring manufacturers offer customization and OEM services?

Yes, many Chinese FKM O ring manufacturers offer customization and OEM services. They can produce O rings according to your specific drawings or samples, using various materials and sizes. Companies like SWKS Seal and Hongju Silicone provide customized solutions, allowing you to tailor the products to your exact needs and specifications.