HomeProductsO-Ring Rubber SealsCustom O-RingsLarge Diameter O-Ring Seal Custom Non Standard Size Manufacturer
red large diameter o rings
red large diameter o rings

Custom O-Rings

Large Diameter O-Ring Seal Custom Non Standard Size Manufacturer

1. Large Diameter O-Ring Seals: Available in various sizes, including 800mm, 1000mm, 1500mm, and larger custom diameters. Larger cross-sections are also available for sealing large industrial equipment, pipelines, pumps, and valves.

2. Custom Large O-Rings: We offer non-standard diameters, cross-sections, and hardness options, with materials including NBR, FKM, and EPDM to meet diverse industrial sealing requirements.

3. Industrial Large Rubber O-Rings: Customized to customer drawings, dimensions, and operating conditions, our large O-ring sealing solutions offer flexible material and size options for a wide range of industrial applications.

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Large Diameter Custom O-Ring Seals: 

We offer a wide range of in-stock O-rings in sizes under 1 meter, with custom manufacturing available for 800mm, 1000mm, 1500mm, and even larger diameters.

Larger cross-sections are also available to meet demanding industrial sealing requirements.

Choose from various rubber materials, including NBR, FKM, and EPDM, with flexible customization based on dimensions, hardness, operating conditions, and technical drawings.

Our large O-ring seals are suitable for industrial equipment, pipelines, pumps, valves, and other sealing applications.

ParameterSpecification
Product NameLarge Diameter O-Ring Seals
Product TypeCustom Rubber O-Ring
Inner Diameter (ID)Custom Sizes Available
Outer Diameter (OD)Custom Sizes Available
Cross-Section Diameter (CS)Customizable
Available Diameters800 mm, 1000 mm, 1500 mm and Larger
Material OptionsNBR, FKM, EPDM, Silicone
HardnessCustomizable According to Requirements
ColorBlack, Brown, Red, Green and Custom Colors
Manufacturing ProcessCustom Manufacturing Based on Specifications
Size ToleranceAccording to Drawings and Requirements
Operating TemperatureDepends on Material Grade
Media CompatibilityDepends on Material Selection
ApplicationIndustrial Equipment, Pumps, Valves, Pipelines and Large Sealing Systems
CustomizationNon-Standard Sizes and Cross-Sections Available
Minimum Order QuantityTo Be Confirmed
PackagingCustomized Packaging Available
Technical SupportAvailable
OEM/ODM ServiceAvailable

JINNAI Rubber Seals Advantages

We specialize in high-quality rubber sealing products and custom rubber O-rings, with a focus on material selection, smooth surface finish, dimensional accuracy, and consistent workmanship.

Our O-ring seals offer reliable sealing performance, elasticity, and dimensional stability, with customization options for diameters, cross-sections, hardness, and colors.

We support non-standard rubber seal manufacturing using materials such as NBR (Nitrile Rubber), FKM (Fluoroelastomer), EPDM (Ethylene Propylene Diene Monomer), and Silicone Rubber.

Our products are suitable for industrial equipment, hydraulic systems, pneumatic equipment, pumps, valves, pipelines, and mechanical sealing applications, providing flexible and dependable industrial rubber sealing solutions.

JINNAI SEAL supports orders starting from a single piece, offering flexible solutions for small-batch orders and multiple specifications. 

JINNAI SEAL large-diameter O-rings are widely used in industrial equipment, hydraulic and pneumatic systems, pumps and valves, pipelines, and heavy machinery.

We offer a variety of rubber materials, sizes, and cross-sections, with custom manufacturing available to meet specific requirements and provide reliable sealing solutions for large equipment and demanding applications.

Add a stronger customization benefit ,Make the application list more concise.

JINNAI SEAL is committed to quality and compliance in rubber sealing products.

Depending on the product type and application requirements, our products can meet relevant quality management and regulatory requirements, including ISO 9001, IATF 16949, RoHS, REACH, and FDA requirements.

Through strict process control and quality inspection, we aim to deliver consistent product quality and reliable sealing performance, helping reduce seal failure risks, maintenance costs, and frequent replacements.


JINNAI SEAL follows a structured manufacturing process for rubber sealing products, covering raw material selection, material mixing, cooling, cutting, molding, deflashing, secondary curing, quality inspection, packaging, and global shipping. With controlled production procedures and rigorous final inspections, we are committed to delivering consistent quality, reliable sealing performance, and dependable service to customers worldwide.

  • Delivery Method:We offer international express, air freight, sea freight and railway transport. You can also appoint your own forwarder for flexible delivery arrangements.

JINNAI SEAL provides professional OEM/ODM services for custom rubber sealing products. Our customization options include material selection, dimensions, shapes, colors, hardness, surface finishes, mold development, and packaging solutions.

We manufacture O-rings, oil seals, gaskets, washers, and other custom rubber components based on customer drawings, samples, and application requirements. From product design and mold development to manufacturing, quality inspection, and packaging, we focus on quality control at every stage to deliver flexible, efficient, and reliable sealing solutions for diverse industries.

Key Customization Options

  • Materials: NBR, FKM, HNBR, EPDM, Silicone, and more
  • Dimensions: Custom inner diameters and cross-sections
  • Shapes & Designs: O-rings, gaskets, washers, and molded parts
  • Colors & Hardness: Multiple color and Shore hardness options
  • Surface Finishes: Matte, glossy, textured, or smooth
  • Mold Development: Precision tooling and multi-cavity molds
  • Packaging: Bags, cartons, pallets, and wooden cases

JINNAI SEAL — Your Reliable Sealing Partner. 

We turn your specifications into customized sealing solutions.

FAQs
  • Can JINNAI SEAL manufacture extra-large O-rings?

    Yes. We offer custom manufacturing of extra-large O-rings in various inner diameters, cross-sections, and specifications for large equipment and industrial sealing systems.

  • What materials are available for extra-large O-rings?

    Available materials include NBR, FKM, EPDM, HNBR, and silicone rubber (VMQ). Material selection depends on operating temperature, media compatibility, pressure, and application conditions.

  • Can extra-large O-rings be customized based on drawings or samples?

    Yes. We can manufacture custom O-rings based on customer drawings, dimensional specifications, or physical samples to meet specific installation and sealing requirements.

  • Which industries use extra-large O-rings?

    Extra-large O-rings are widely used in industrial equipment, hydraulic systems, pumps and valves, pipelines, construction machinery, energy equipment, and fluid handling systems.

  • What information is needed to order extra-large O-rings?

    Please provide the inner diameter, cross-section, material, hardness, operating temperature, media, working pressure, and order quantity. Drawings or physical samples are also helpful for evaluating specifications and providing a suitable customized solution.

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we can give customers the most competitive price to meet your budget