Product Description
Flat O Ring Washers are specialized sealing components that combine the advantages of flat washers and O-rings. With a flat profile and elastic sealing properties, these washers are designed to provide effective sealing, cushioning, and vibration damping in static sealing applications.
Unlike standard flat washers, flat O ring washers offer enhanced sealing performance by creating a tight, elastic barrier between mating surfaces. Compared to traditional O-rings, their flat geometry allows for easier installation and improved load distribution.
Flat O ring washers combine surface coverage of flat washers with elastic sealing performance of O-rings.
Flat O Ring Washers are widely used in automotive assemblies, plumbing systems, hydraulic equipment, electrical enclosures, HVAC systems, and industrial machinery where reliable static sealing and vibration isolation are required.
Technical Parameters (Typical NBR 70)
| Property | Unit | Test Method | Value |
| Material | - | - | NBR (Nitrile Rubber) |
| Hardness | Shore A | ASTM D2240 | 70 ± 5 |
| Tensile Strength | MPa | ASTM D412 | ≥ 10 |
| Elongation at Break | % | ASTM D412 | ≥ 300 |
| Compression Set | % | ASTM D395 B | ≤ 25 (22h / 70°C) |
| Temperature Range | °C | - | -40 to +100 |
| Dimensional Tolerance | mm | ISO 3302-1 | ± 0.2 |
Material Options
Elastomer Materials：
| Material | Key Properties |
|---|---|
| NR | High elasticity |
| SBR | Abrasion resistant |
| NBR | Oil resistant |
| CR (Neoprene®) | Weather resistant |
| EPDM | Water & aging resistant |
| EPDM (Peroxide) | Enhanced heat resistance |
| IIR | Low gas permeability |
| XNBR | High wear resistance |
| PU | High strength, wear resistant |
| HNBR | Oil & heat resistant |
| ACM | Hot oil resistant |
| VMQ (Silicone) | Wide temperature range |
| FVMQ | Fuel & low-temperature resistant |
| FKM (Viton®) | Chemical & high-temperature resistant |
| TPR | Flexible, easy to process |
High-Performance Materials：
| Material | Key Properties |
|---|---|
| PTFE | Low friction, chemical resistant |
| FFKM | Extreme chemical & heat resistance |
Compound Options：
| Option | Description |
|---|---|
| Internal lubrication | Paraffin / PTFE / Silicone / Graphite |
| Conductive rubber | Anti-static |
| UL approved | Safety certified |
Surface Options：
| Option | Description |
|---|---|
| Talc powder | Anti-blocking |
| Silicone oil | Surface lubrication |
| PTFE coating | Reduced friction |
| PSA | Single- or double-sided adhesive |
Flat O ring washers are primarily used for static sealing. Select material based on media compatibility and operating temperature.
Key Features & Advantages
- Flat profile for stable load distribution
- Elastic sealing for leak prevention
- Easy installation without complex grooves
- Effective vibration and noise reduction
- Protects mating surfaces from damage
- Available in multiple rubber materials
Main Applications
- Automotive oil, fuel, and coolant systems
- Plumbing fittings and pipe connections
- Hydraulic and pneumatic equipment
- Electrical enclosures and junction boxes
- HVAC systems and installations
- Industrial machinery and equipment
Packaging & Shipping
📦 Packaging Options：
| Type | Details |
|---|---|
| Standard Packaging |
Sealed PE bags Inner cartons with protective layers Palletized packing for bulk shipments |
| Custom Packaging (Upon Request) |
Small pouch / bag packaging Individual heat-sealed bag with cardboard backing Individual bubble-wrap protection Light-proof black packaging Customized labels or barcodes
|
🚚 Shipping Methods
| Item | Details |
|---|---|
| MOQ | 1 pcs |
| Lead Time | • In stock: shipped within 3 days• Out of stock: 7–15 days after order confirmation• New mold: sample in 10–20 days, mass production after approval |
| Port | Xiamen, China |
| Shipping Methods | Express (DHL, FedEx, UPS), Air, SeaCustomer's forwarder acceptable |
| Trade Terms | FOB / CIF / DDP available |
| Sample Policy | Samples available; customer pays freight |
| Export Support | Standard export documents provided |
Free samples, fast quotations within 24 hours, and flexible OEM & ODM services are available. Contact us today to discuss your flat O ring washer requirements.
Factory Strength & Quality Assurance
Xiamen Best Seal Imp. & Exp. Co., Ltd. is a professional manufacturer of rubber sealing products with over 20 years of experience. Our flat O ring washers are produced under strict quality control to ensure stable performance and long service life.
Certifications: ISO 9001, RoHS, REACH, FDA (food-grade materials available)
Contact US：
Xiamen Best Seal Imp and Exp Co.,Ltd
Tel: +86-592-5782315
Mob: +8618950159396
Email: yunying2@bestsealhk.com
Add: Unit 522-525, Gaodian Road 6#, Huli District, Xiamen, China
Why choose us?
- Our Rubber Washers are manufactured to meet the highest quality standards, ensuring customer satisfaction and retention.
- The responsibilities and missions are the sources of motivation for the company's continuous development or advancement.
- Our Rubber Washers can be used in a wide range of applications, including high-voltage electrical equipment, piping systems, and machinery.
- We hope to gradually develop into a leading and advantageous enterprise of high-end Flat O Ring Washers and become a strong enterprise with excellent performance in terms of enterprise scale and competitive ability.
- Our Rubber Washers are easy to install and require minimal maintenance.
- We insist on strengthening the foundation, improving quality and efficiency, and strive to create performance and value.
- Our Rubber Washers are designed to minimize leaks and prevent contamination in various industrial processes.
- To adapt to rapid changes is the objective requirement for talents in the Internet era, and only by persistent learning and continuous development can we keep pace with the development of the times.
- Our factory is equipped with advanced production facilities that enable us to produce Rubber Washers with high precision and accuracy.
- We believe that employees are the root of all wealth, and let those who want to work have the opportunity, those who can work have the stage, and those who have done well have the harvest.
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