Hengshui Minai Rubber & Plastic Technology Co., Ltd. is one of the leading manufacturers and suppliers of flat rubber sealing washers in China. We are committed to providing high quality customized service and OEM/ODM service to global clients. Please feel free to wholesale bulk durable flat rubber sealing washers made in China here from our factory. If you have any enquiry about pricelist, please feel free to email us.
Products Description
This series of flat rubber sealing washers is manufactured by high-precision compression vulcanization technology, featuring smooth burr-free, pore-free and deformation-free surface, regular roundness and strict dimensional tolerance control. Multiple high-quality material options including NBR, EPDM, food-grade silicone and polyurethane are available to adapt to different working conditions such as oil resistance, waterproof, high & low temperature resistance, wear resistance, aging resistance and food safety. Featuring an ultra-flat and low-thickness structure with large contact area and even force distribution, the washers closely fit flat equipment surfaces under pressure and fill micro gaps to achieve excellent waterproof, oil-proof, airtight and dustproof performance. Compared with traditional O-rings, they cause no assembly protrusion, offset or distortion, ensuring no impact on equipment assembly accuracy and more stable sealing performance. Suitable for static sealing, low-pressure buffering and anti-loosening scenarios, they support mass production of standard sizes and full customization of non-standard thickness, dimensions, hardness, colors and special working condition formulas.
Product Parameters
|
Parameter |
Specification |
|
Material |
NBR, EPDM, Food-grade Silicone, Polyurethane |
|
Hardness Range |
40A–90A Shore A (Customizable) |
|
Working Temperature |
-196℃ ~ 300℃ (Material dependent) |
|
Working Pressure |
0–30bar Medium & low pressure |
|
Compression Set |
≤12% (Excellent resilience) |
|
Structure Features |
Ultra-thin, high flatness, no protrusion, tight fitting |
|
Applicable Medium |
Water, air, lubricating oil, hydraulic oil, weak acid and alkali, humid and dusty environment |
|
Process Standard |
Precision molding, integral vulcanization, burr-free, accurate size |
|
Customization Service |
Custom size, thickness, hardness, color, material and working condition formula |
Product Applications
Flat rubber sealing washers are widely applied to narrow-gap, flat-end and precision assembly sealing scenarios in both civil and industrial fields. In civilian applications, they are commonly used for faucets, shower joints, water purifiers, water heaters, kitchen and bathroom appliances, and pipe fittings for water leakage prevention, noise reduction and anti-loosening purposes. In industrial scenarios, they fit hydraulic and pneumatic parts, pump valves, hardware fasteners, instruments, electronic control equipment, automated machinery, precision devices, photovoltaic and electronic components for static sealing, dust isolation, vibration buffering and insulation. They are especially ideal for narrow-gap precision scenarios where thick gaskets and standard O-rings cannot be installed.
Product Q&A
Q: What are the core advantages of flat rubber sealing washers?
A: The core advantages are ultra-thin flat design, narrow gap adaptability and stable sealing. Unlike traditional O-rings that are prone to distortion and bulging, flat washers feature large contact area and even force distribution. They fit flat without protrusions, do not affect precision assembly, and effectively avoid micro-leakage and abnormal noise, integrating sealing, shock absorption, dustproofing and anti-loosening functions.
Q: Are the sealing effects of Flat Rubber Sealing Washers stable?
A: Extremely stable. Made of high-toughness rubber with excellent resilience, ultra-thin washers can fully fill micro gaps and achieve tight gap-free fitting after uniform fastening. With flat mounting surfaces and standard installation, thin flat washers provide higher sealing accuracy and better leakage resistance than thick ordinary gaskets, resisting slow leakage under long-term vibration and pressure fluctuation.
Q: Do you support small-batch customization and sampling?
A: Yes. We support small-batch trial orders, new product sampling and non-standard customization. Custom sizes, thicknesses, hardness, colors and special material formulas are available according to drawings, samples and parameters. The sampling cycle is 3-7 working days with flexible and efficient delivery. Mass production starts only after sample confirmation to minimize customer trial error costs and procurement risks.
