Rubber Washers & Sealing Rings
Key Features
- Flat cross-section provides effective sealing between adjoining surfaces
- Manufactured from EPDM, neoprene, nitrile, silicone and natural rubber
- Available in a wide range of internal and external diameters
- Custom thicknesses and hardness grades available
- Provides sealing, cushioning and vibration dampening
- Precision punched or cut from rubber sheet materials
- Standard and bespoke washers and sealing rings available
Product Description
Our rubber washers and sealing rings provide a reliable solution for sealing, cushioning, insulation and vibration reduction across a wide range of industrial and commercial applications. Manufactured from high-quality rubber sheet materials, these flat sealing components can be precision punched or cut to meet specific dimensional and performance requirements.
Unlike traditional round-section O-rings, flat rubber washers and sealing rings feature a rectangular cross-section with a central hole. This provides a broad contact surface, making them particularly suitable for sealing between flat mating surfaces, around bolts and fasteners, and within flanged assemblies.
Available in a range of materials, including EPDM, neoprene, nitrile (NBR), silicone and natural rubber, our washers offer varying levels of resistance to water, oils, chemicals, temperature and environmental exposure.
We can manufacture bespoke rubber washers and flat sealing rings in a wide selection of internal diameters, external diameters and thicknesses. Whether you require small punched washers, large-diameter sealing rings or custom rubber gaskets, we can produce components to your specifications.
Flat Rubber Washers vs O-Rings
Although rubber washers, sealing rings and O-rings are all used to prevent leakage, their cross-sectional shapes and sealing methods differ.
Flat Rubber Washer
Flat rectangular cross-section with broad sealing faces, typically punched or cut from rubber sheet.
Rubber O-Ring
Round cross-section, typically moulded or formed to seal within a suitably designed groove or gland.
Flat rubber washers and sealing rings are generally used between flat surfaces where compression creates a seal across the contact area. They can also provide cushioning, spacing and vibration reduction around fasteners.
Rubber O-rings feature a circular cross-section and are commonly installed within engineered grooves or glands. They are used in a wide variety of static and dynamic sealing applications.
Selecting the correct seal depends on the joint design, pressure, compression requirements and operating environment.
Custom Rubber Washer Manufacturing
The Rubber Company offers specialist rubber washer cutting, punching and fabrication services, enabling us to manufacture flat sealing components to individual specifications.
Using suitable rubber sheet materials, we can produce washers and rings with precise internal and external dimensions, as well as custom thicknesses and material grades.
Our manufacturing capabilities include:
- Precision Punching: Producing consistent internal and external diameters.
- Custom Cutting: Manufacturing bespoke sizes and large-diameter rings.
- Material Selection: Matching rubber compounds to application requirements.
- Thickness Options: Cutting washers from different rubber sheet thicknesses.
- Bespoke Shapes: Producing non-standard washers and flat sealing gaskets.
- Replacement Components: Manufacturing from samples or technical drawings.
We can support both new product development and the replacement of existing rubber sealing components.
Why Choose The Rubber Company for Rubber Washers?
The Rubber Company combines an extensive range of specialist rubber sheet materials with precision cutting and fabrication capabilities.
Rather than being limited to standard washer dimensions, customers can specify the required material, internal diameter, external diameter, thickness and quantity.
Our team can also assist with identifying suitable rubber compounds for applications involving water, oils, chemicals, temperature extremes and environmental exposure.
Whether you require small rubber washers, large flat sealing rings or bespoke industrial gaskets, we can help identify a suitable manufacturing solution.
FAQs
A flat rubber washer is a circular sealing or cushioning component with a central hole and a flat cross-section. It is typically manufactured by punching or cutting rubber sheet material and is used between mating surfaces, around fasteners or within suitable sealing assemblies.
A rubber washer has a flat cross-section, while an O-ring has a round cross-section. Flat washers are commonly used between flat surfaces, whereas O-rings are typically designed to fit into grooves or glands. The correct component depends on the sealing arrangement and operating conditions.
Yes. We can manufacture bespoke rubber washers and sealing rings with specified internal diameters, external diameters and thicknesses. Components can be produced from suitable rubber sheet materials using punching or precision cutting methods.
The most suitable material depends on the application. EPDM is commonly used for water and outdoor sealing, nitrile for oil-resistant applications, and silicone for high- and low-temperature environments. Neoprene and natural rubber are also suitable for selected general-purpose applications.
Certain rubber washers can be manufactured for high-temperature applications. Silicone rubber is commonly selected where elevated temperatures are present, although the maximum operating temperature depends on the compound grade and application conditions.
Yes. Large-diameter flat rubber sealing rings can be cut from suitable rubber sheet materials, subject to sheet dimensions, material availability and manufacturing capabilities. Custom rings can be produced to suit flanges, housings and other industrial assemblies.
Yes. We can assess existing rubber washers, technical drawings or dimensional specifications to investigate suitable replacement components. Important details include the internal diameter, external diameter, thickness, rubber material and intended operating conditions.
Specifications
| Application: | Sealing pipework, bolts and fasteners, plumbing, industrial machinery, electrical equipment |
| Product: | Washer and Sealing Rings |
| Hardness (Shore A): | 30° - 75° |
| Material: | EPDM, nitrile, silicone, neoprene, natural rubber |
Potential Applications
- Sealing pipework and flange connections
- Sealing around bolts and fasteners
- Plumbing fittings and water connections
- Cushioning industrial machinery components
- Insulating electrical equipment
- Automotive sealing and vibration reduction
- Sealing pumps, valves and housings
- General construction and engineering applications
