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Custom-molded O-rings, gaskets, and seals manufactured to IATF 16949 & ISO standards. Delivering high-reliability components for automotive, medical, and industrial applications.
Hongjie manufactures custom rubber washers, rubber discs, die-cut silicone washers, and rubber sheet components in NBR, EPDM, silicone, FKM, neoprene, and other rubber compounds. Our washers are used for sealing under bolt load, cushioning, insulation, spacing, vibration reduction, and component protection in OEM assemblies, automotive systems, electrical equipment, medical devices, sanitary products, and industrial machinery.
Custom-molded O-rings, gaskets, and seals manufactured to IATF 16949 & ISO standards. Delivering high-reliability components for automotive, medical, and industrial applications.
Hongjie supports custom rubber washers with material selection, custom sizes, hardness control, and sealing or assembly solutions.
Rubber washer performance depends on the material, hardness, thickness, compression behavior, operating medium, temperature, and applied load. A washer installed beneath a metal fastener has different requirements from a flat silicone disc used in clean equipment or a rubber sheet component converted into strips and pads.
As a rubber sealing washers manufacturer, Hongjie helps buyers choose between molding, die-cutting, and sheet conversion according to the part geometry, tolerance, quantity, and operating conditions. We manufacture custom rubber washers with special profiles, die-cut silicone washers for flat components, and rubber sheet materials for cut-to-size parts, with support for material selection, dimensional control, hardness specification, and repeatable batch production.
Buyers searching for custom rubber washers often do not know whether their part should be molded, die-cut, or cut from rubber sheet. The right choice depends on geometry, edge quality, thickness, tolerance, compression requirement, and production volume.
Molded rubber washers are suitable when the part requires a raised lip, groove, stepped section, non-flat profile, special sealing edge, or more controlled dimensional consistency. This option is often used for automotive, equipment, and industrial assemblies where the washer must provide both sealing and mechanical positioning.
Die-cut silicone washers are a practical choice for flat circular washers, discs, pads, and insulation parts. They are commonly selected for medical equipment, food-contact equipment, electronic assemblies, sanitary products, and high-temperature applications where a clean surface, flexible sealing, and stable performance are required.
Rubber sheet materials are suitable when the buyer needs strips, pads, rectangular parts, simple gaskets, or flexible cushioning components. Sheets can be supplied or converted into custom sizes depending on the drawing, thickness, hardness, and material requirement.
Washer material should be selected according to the medium, temperature, compression force, outdoor exposure, fluid resistance, and required service life. Unlike O-rings and seals, rubber washers are often compressed under fasteners or used as flat sealing, cushioning, or insulation components. This means thickness, hardness, surface contact, and compression set should be reviewed together.
| Rubber Washer Material Options | |
|---|---|
| EPDM | Best for water, steam, and outdoor sealing. EPDM rubber washers offer good resistance to water, steam, weathering, ozone, and outdoor exposure. They are commonly used in outdoor enclosures, water systems, sanitary equipment, agricultural equipment, and general sealing under bolt load. |
| NBR | Best for oil, fuel, and hydraulic environments. NBR rubber washers are suitable for oil-resistant and fuel-related applications. They are commonly used in automotive assemblies, hydraulic equipment, oil-resistant washers, and general industrial machinery where contact with oil or grease is expected. |
| Silicone | Best for medical, food-contact, and high-temperature use. Silicone rubber washers provide flexible performance across a wide temperature range and are often selected for clean applications. They are suitable for medical equipment, food-contact equipment, electronic devices, sanitary parts, and high-temperature sealing points. |
| FKM / Viton | Best for chemical and extreme heat applications. FKM rubber washers are recommended for demanding environments involving heat, chemicals, fuels, or aggressive media. They are commonly used in chemical processing equipment, fuel systems, high-temperature assemblies, and industrial sealing points with stricter material requirements. |
| Neoprene | Best for weather and general-purpose sealing. Neoprene rubber washers provide balanced weather resistance, moderate oil resistance, and general-purpose durability. They are often used in electrical equipment, appliance parts, outdoor equipment, cushioning washers, and general industrial sealing applications. |
Hongjie manufactures custom rubber washers from drawings, samples, or operating specifications. Geometry, compound, hardness, color, and manufacturing method can be adjusted to suit the required fit and performance.
Inner diameter, outer diameter, thickness, flatness, edge shape, and profile can be customized to the available installation space and required compression.
Softer compounds provide greater conformability, while harder compounds offer improved dimensional stability and support beneath fasteners. The suitable hardness depends on the applied load, contact surface, and required deformation.
Black, white, transparent, red, blue, and custom color options can be discussed based on material availability. For regulated applications, material compliance and documentation requirements can be reviewed during project confirmation.
For new projects, buyers can submit a 2D drawing, 3D file, physical sample, or operating-condition description. Hongjie can review the material, dimensions, tooling approach, and sample requirements before batch production. Parts used in critical positions can also be reviewed by our rubber seal engineering team.
Rubber washers used in OEM assemblies must remain consistent in size, hardness, appearance, compression behavior, and material performance. Hongjie manufactures custom rubber washers, rubber discs, and die-cut silicone washers under IATF 16949 and ISO quality management standards, with inspection processes designed for automotive, medical, industrial, and equipment manufacturing customers.
Depending on project requirements, inspection may cover material verification, dimensions, hardness, appearance, approved samples, batch consistency, and packaging. These controls help maintain correct fit and predictable performance under the specified load, temperature, and fluid conditions.
Hongjie supplies rubber washers and sealing discs for automotive, electrical, industrial, medical, sanitary, and agricultural equipment, with material and geometry selected for each operating environment.
Major Industries
Served Worldwide
Used beneath fasteners, around fluid connections, and between assembled components in vehicles and transportation equipment.
Insulating washers and die-cut silicone parts can separate conductive components, protect enclosure contact points, and support cable or electronic assemblies.
Custom washers, converted sheet parts, and molded components can be installed beneath bolts, between machine parts, or at equipment contact points exposed to repeated loading.
Silicone washers and discs are suitable for clean equipment assemblies requiring flexible compounds, controlled dimensions, and application-specific material documentation.
EPDM and silicone washers can be specified for water-contact parts, sanitary equipment, irrigation systems, and agricultural assemblies exposed to outdoor conditions.
Our engineering team reviews your specs and responds within 24 hours with material recommendations and competitive pricing.
