Custom X Ring Factory for NBR FKM EPDM Rubber Seals
1 Custom Manufacturing:We specialize in custom NBR FKM and EPDM X Rings with flexible options for sizes hardness and material selection to meet diverse industrial sealing requirements.
2.Precision Sealing Design:Manufactured with attention to dimensional accuracy surface finish and sealing performance for industrial equipment and hydraulic systems.
3.Direct Factory Supply:As a rubber seal manufacturer we support custom specifications bulk production and OEM orders to meet different customer requirements.
X Rings also known as Quad Rings or Q Rings are high performance rubber sealing components designed for static and dynamic sealing applications. Featuring a unique four lobed profile these industrial rubber seals provide multiple sealing contact points to help reduce friction minimize spiral twisting and improve sealing stability compared with conventional O Rings in suitable applications.
Our custom X Rings are available in NBR FKM and EPDM rubber seal materials to meet different requirements for oil resistance chemical compatibility and temperature performance. As a rubber seal manufacturer we offer custom rubber seals in various sizes hardness grades and specifications for hydraulic systems pneumatic equipment automotive components and industrial machinery.
These X Ring seals are suitable for a wide range of industrial sealing applications and can be manufactured according to customer drawings or specific requirements. Standard AS568 sizes are available where applicable making them a versatile solution for OEM projects industrial equipment maintenance and bulk rubber seal supply.
Quad Ring Seal Technical Specifications
Parameter
Specification
Product Name
X Ring Seals
Material
NBR FKM EPDM
Hardness
Shore A 50–90
Color
Black or Custom
Temperature Range
Depends on Material
Size
AS568 Standard , metric O rings and custom non-standard molded O ring size
Application
Hydraulic and Pneumatic Systems
Sealing Type
Static and Dynamic Sealing
Customization
OEM and ODM Available
X Ring Size Measurement
Accurate X Ring size measurement is essential for reliable sealing performance.
Measure the inner diameter ID outer diameter OD and cross section CS
using a digital caliper to ensure proper fit and compatibility.
Our custom X Rings and rubber seals are available in NBR FKM and EPDM materials for hydraulic systems pneumatic equipment and industrial sealing applications.
NBR EPDM FKM X Ring Material Comparison for Industrial Sealing Applications
NBR EPDM and FKM X Rings offer different sealing properties for a wide range of industrial applications.
NBR X Rings offer excellent resistance to mineral oils grease and petroleum based fluids. Their four lobe design provides reliable sealing performance while helping reduce friction and prevent spiral twisting in dynamic applications. With good wear resistance and mechanical strength NBR X Rings are ideal for hydraulic systems pneumatic equipment automotive components and general industrial machinery.
EPDM X Rings provide excellent resistance to water hot water steam weathering ozone and aging. Their flexible four lobe profile supports reliable sealing performance in static and dynamic applications. EPDM rubber seals are suitable for water systems HVAC equipment outdoor installations and applications involving compatible polar fluids. They are generally not recommended for petroleum based oils and fuels.
FKM X Rings are designed for demanding sealing applications requiring excellent heat resistance chemical resistance and low permeability. They offer reliable performance in many mineral oils fuels lubricants and industrial chemicals when the selected compound is compatible with the operating medium. Combined with a four lobe profile that helps reduce friction and spiral twisting FKM X Rings are suitable for automotive systems hydraulic equipment and high temperature industrial applications.
As a professional rubber seal manufacturer we supply custom X Rings Quad Rings and industrial rubber seals in various sizes hardness grades and materials to meet OEM and specific sealing requirements.
X Rings Applications
X Rings or Quad Rings are widely used in hydraulic systems pneumatic equipment automotive components industrial machinery and fluid power applications. Their four lobe design provides reliable static and dynamic sealing while helping reduce friction and prevent spiral twisting.
Available in NBR FKM and EPDM rubber materials these industrial rubber seals meet different requirements for oil resistance chemical compatibility temperature performance and weather resistance.
Custom X Rings are suitable for pumps valves cylinders and other precision sealing applications with various sizes hardness grades and specifications available for OEM manufacturing and industrial maintenance.
Packing /Payment/Shipping service
Package:We provide standard cartons, pallets and wooden cases. Custom packaging is available upon request to protect goods well for different shipments.
Payment Methods:Multi-currency settlement (CNY, USD, EUR, etc.). Multiple payment options including T/T, PayPal. Local bank transfer is available for some countries for faster transactions.
Delivery Method:We offer international express, air freight, sea freight and railway transport. You can also appoint your own forwarder for flexible delivery arrangements.
OEM and ODM Service
Jinnai Seal provides customized rubber sealing solutions tailored to diverse industrial needs. Our customization services cover rubber materials, dimensions, shapes and designs, colors, hardness, surface finishes, mold development, and packaging. We support both standard specifications and custom manufacturing based on your drawings, samples, and application requirements, delivering flexible and reliable sealing products for a wide range of industries.
Why Choose Jinnai Seal?
Factory Advantages
R&D Strength Focus on R&D and manufacturing of rubber seals for 20 years.
Vulcanization Workshop 200+ advanced equipment, integrated molding & mass production.
Mold Workshop Accurate dimension, consistent quality, fast delivery.
Product Advantages
Finished Goods Warehouse 3000+ O-ring specifications available for same-day shipment.
Customized Products Non-standard mold design, professional R&D team, 100% inspection before delivery,
Jinnai Seal specializes in manufacturing a wide range of sealing products, including bonded seals, rubber O rings, custom rubber seals, rubber balls, gaskets and washers, and oil seals. We offer various materials, sizes, colors, and hardness options to meet diverse industrial requirements. With flexible customization and a focus on product quality, we provide reliable sealing solutions for automotive systems, hydraulic and pneumatic equipment, pumps, valves, chemical processing, and general industrial applications. Standard sizes and customized products are available to meet your specific needs.
FAQs
What is the difference between an X Ring and an O-Ring in hydraulic systems?
Compared with conventional O-Rings, X Rings feature a four-lobe cross-section that can provide improved lubrication retention and reduced friction in suitable applications. They may also help reduce spiral twisting in dynamic hydraulic cylinders and pneumatic actuators. Actual performance depends on groove design, pressure, speed, and operating conditions.
Which rubber materials are available for automotive and industrial X Rings?
X Rings are commonly manufactured from NBR, FKM, and EPDM. NBR is suitable for many oil-resistant automotive and hydraulic applications, FKM is often selected for higher-temperature and chemical-resistant environments, and EPDM is commonly used for water, steam, and weather-resistant applications. Material selection should match the specific media and temperature requirements.
Can X Rings be used in pumps, valves, and fluid control systems?
Yes. X Rings can be used in suitable pump assemblies, valves, fluid control equipment, and other sealing components. The correct material, size, hardness, and groove dimensions are essential to achieve reliable sealing and minimize leakage under the intended operating conditions.
Are custom X Rings available for pneumatic equipment and precision machinery?
Yes. Custom X Rings can be manufactured to meet specific inner diameter, cross-section, hardness, and material requirements. For pneumatic cylinders, precision machinery, and OEM equipment, providing drawings, samples, operating pressure, movement type, and working temperature helps determine a suitable sealing solution.
How do I select the right X Ring for hydraulic, automotive, or chemical processing applications?
Consider the working medium, temperature range, pressure, movement type, shaft speed, groove dimensions, and expected service life. NBR may suit many oil-based systems, FKM may be appropriate for certain high-temperature or chemical environments, and EPDM may suit water-based media. Always verify compatibility with the actual fluid and operating conditions before final selection.
Can an X-Ring be “extruded” under high pressure? When must a back-up ring be used?
Yes, it can. The advantages of X-Rings are mainly in low-to-medium pressure dynamic applications requiring low friction and resistance to twisting. Once pressure increases, the four sealing lips also face the risk of being extruded into the clearance. The common industry practice is: when system pressure exceeds approximately 5 MPa (50 bar), it is recommended to use a back-up ring in dynamic applications to prevent the sealing material from being extruded. Besides pressure, extrusion risk also depends on clearance size, temperature, material hardness, and motion speed; large clearances, high temperatures, and high-frequency reciprocation further increase the risk. If the application combines high pressure, large clearance, and high temperature, upgrading the X-Ring material alone is not enough to solve extrusion; back-up rings or an anti-extrusion groove design must also be considered.
