Hengshui Minai Rubber & Plastic Technology Co., Ltd. is one of the leading manufacturers and suppliers of round flat rubber gasket 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 round flat rubber gasket 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 round flat rubber gaskets are made of high-quality rubber materials including NBR, EPDM, FKM, Silicone and CR, adopting precision integral moulding or whole-plate cutting technology. The gaskets feature uniform thickness, smooth flat surface, no warping, no cracks and no impurities. The dense integral material achieves even compression deformation and soft rebound under pressure, perfectly fitting flat docking surfaces and filling tiny scratches and assembly gaps for full-range uniform sealing. With continuous and gap-free sealing surface without splicing dead angles, it completely avoids partial leakage. Customizable material properties such as oil resistance, weather resistance, high temperature resistance, corrosion resistance and food-grade cleanliness meet differentiated working conditions. Complete thickness specifications fit standard flanges, pipe fittings and equipment cover positions. Optimized for static long-term compression, it features excellent anti-aging, anti-compression relaxation and weather resistance, resisting collapse, hardening and cracking during long-term operation to maintain stable equipment tightness. It requires no precise groove positioning and delivers extremely high universality.
Product Parameters
|
Parameter Item |
Specification |
|
Common Materials |
NBR, EPDM, FKM, VMQ Silicone, CR Neoprene |
|
Hardness Range |
Shore A 40°–85° (customizable) |
|
Thickness Range |
0.5mm–10mm regular thickness, non-standard customization available |
|
Temperature Resistance |
-50℃～230℃ (depending on material grade) |
|
Applicable Conditions |
Pure static flat compression sealing, not for dynamic motion scenarios |
|
Pressure Resistance |
Static low and medium pressure (≤10MPa) |
|
Sealing Media |
Air, clean water, steam, oil products, weak acid and alkali, conventional gas |
|
Core Features |
Flat sealing, shock absorption & cushioning, anti-slip leveling, dustproof & waterproof, noise reduction & anti-loosening |
Product Advantages
Full flat integral sealing without leakage dead angles
The integral flat structure provides complete and continuous contact surface. It fits flat gaps fully after compression without blind zones or partial voids. Compared with annular seals, the full-coverage flat sealing thoroughly eliminates edge micro-leakage and gap air leakage, ideal for large-area flat end face sealing.
Zero-threshold installation without groove positioning
No special sealing grooves or precise clamping are required. It can be used by flat laying and direct compression, adapting to all circular flat docking positions. Featuring ultra-high installation fault tolerance and simple replacement, it greatly reduces assembly and maintenance difficulty.
Dual functions of leveling and cushioning for multi-purpose use
In addition to sealing performance, it realizes leveling, vibration buffering, friction noise reduction and fastener anti-loosening. It compensates for uneven docking surfaces and excessive assembly gaps, reducing equipment vibration wear and achieving dual values of sealing and protection.
Static anti-relaxation for long-term stability
Formulated for long-term static compression working conditions, it excels in anti-compression relaxation, resisting thinning and failure under prolonged pressure. With excellent anti-aging, UV resistance and weather resistance, it maintains stable performance in outdoor and enclosed equipment for long service life.
Complete specifications and high cost performance
A full range of thickness and outer diameter specifications are in stock with multiple material options. Highly universal for civil and industrial equipment, it features simple structure, controllable cost and suitability for large-scale standardized supporting applications.
Installation Method
- Pipeline Flange Sealing: End face sealing for water supply and drainage, HVAC and low-pressure chemical pipeline flanges, preventing water, gas and medium leakage for static fixed pipeline connections.
- Electromechanical Equipment Shells: Sealing for equipment end covers, box plates and circular shell interfaces, achieving dustproof and moistureproof effects to protect internal circuits and components from erosion.
- Fastener Buffer Protection: Compression gaskets for bolts, nuts and pressure covers, providing buffering and pressure reduction, anti-loosening and anti-friction noise functions, avoiding equipment surface damage caused by rigid compression.
- Home Appliance & Water Purification Equipment: Interface sealing for water heaters, water purifiers, water pumps and HVAC appliances, featuring non-toxic waterproof, temperature resistance and aging resistance for civil clean water and ventilation scenarios.
- Light Industrial Machinery: Flat sealing for small pumps, valves, instruments and general mechanical equipment, stably preventing leakage and reducing vibration noise under normal-temperature and low-pressure conventional working conditions.
- Outdoor Complete Equipment: End face sealing for outdoor electrical boxes, protective equipment and exposed pipelines, featuring UV resistance and weather resistance for long-term stable operation in complex outdoor climates.
Product Q&A
Q: Are round flat rubber gaskets suitable for dynamic operating equipment?
A: This product is most suitable for various static sealing, low-pressure buffering and fastening anti-loosening scenarios, such as pipe joints, equipment end faces, home appliance interfaces and screw fastening sealing. It is not recommended for high-speed reciprocating and rotating dynamic friction working conditions. Special wear-resistant sealing rings are suggested for high-speed operating scenarios to avoid thinning and failure caused by long-term friction.
Q: Will Round Flat Rubber Gaskets cause poor sealing due to ultra-thin thickness??
A: No. Despite the low thickness, flat gaskets have excellent rubber resilience and can completely fit flat end faces and fill micro gaps under uniform fastening pressure. The advantage of the thin structure is closer fitting without suspended gaps. With flat equipment end faces and standard installation, it achieves tighter sealing and better leakage prevention than thick gaskets with zero leakage.
Q: Can round flat rubber gaskets be reused after disassembly?
A: It can be reused after slight disassembly under normal working conditions due to high toughness and stable resilience. However, under high-pressure, high-temperature, oil-corrosive and long-term compression conditions, rubber will produce slight permanent compression deformation, which may cause poor fitting and micro-leakage after reinstallation. It is recommended to replace with new gaskets during equipment maintenance to ensure zero sealing risk.
