Hengshui Minai Rubber & Plastic Technology Co., Ltd. is one of the leading manufacturers and suppliers of round rubber ring 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 rubber ring 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 rubber rings adopts a standard annular structure with burr-free, pore-free and gap-free smooth surface, tiny dimensional tolerance and high concentricity. Multiple material options including NBR, EPDM, food-grade silicone, polyurethane and polymer meet working requirements of oil resistance, water resistance, high and low temperature resistance, wear resistance, aging resistance and corrosion resistance. With flexible texture, strong resilience and low compression set, the rings can quickly fit equipment sealing surfaces under pressure, fill tiny gaps and maintain zero-leakage sealing status continuously. Suitable for static fixed sealing, shaft rotary sealing and piston reciprocating dynamic sealing, they are widely used in bathroom appliances, pump valve hydraulic systems, automotive hardware, engineering machinery, photovoltaic semiconductors and intelligent manufacturing. Both standard mass production and non-standard customization of size, shape, hardness and color are available to meet most general and precision equipment sealing needs.
Product Advantages
Two-way sealing design for both static and dynamic working conditions
Different from one-way sealing parts, O-rings realize axial and radial two-way sealing, suitable for static fixed sealing of flanges and end covers, as well as dynamic sealing of shaft reciprocation and low-speed rotation, with far higher working condition compatibility than ordinary gaskets and special-shaped sealing rings.
Ultra-low compression deformation for long-term stable sealing
Adopting precise vulcanization technology, the product has extremely low permanent compression deformation. It will not collapse, harden or lose rebound elasticity under long-term pressure and alternating cold and hot environments, maintaining stable fitting and sealing to avoid slow leakage and pressure loss in later equipment operation.
Full material coverage for accurate adaptation to complex media
Multiple rubber materials are available for targeted matching: NBR for oil resistance, EPDM for weather and water resistance, FKM for high temperature and strong corrosion resistance, silicone for clean and non-toxic performance, and HNBR for high pressure and wear resistance, solving various harsh sealing problems of high and low temperature, corrosion, oil products and cleanliness.
Adaptive tolerance reducing assembly precision requirements
With excellent elastic rebound performance, it can automatically compensate for equipment machining tolerances, assembly micro gaps and slight wear gaps. It has high fault tolerance for mounting groove precision and equipment matching, featuring convenient installation and no easy damage.
Minimal structure and high universality to reduce costs and improve efficiency
Featuring lightweight and simple structure, small installation space and strong interchangeability, standard specifications are universally applicable with sufficient stock and convenient replacement. No complex tooling is required, greatly reducing equipment assembly and later operation and maintenance replacement costs.
Manufacturer Capability
- Full-category mass production capacity: Support large-scale production of full-series rubber O-rings including NBR, EPDM, FKM, VMQ and HNBR, and customized production of ordinary industrial grade, food grade, medical grade, high pressure and corrosion resistant grade to meet the needs of all industries.
- Full coverage of multi-standard sizes: Compatible with multiple system standards such as GB, AS568, JIS and BS. Sufficient stock for conventional specifications, and rapid mold opening and customization for super-large, super-small and non-standard special-shaped sections.
- Precision process quality control system: Adopt fully automatic molding, precision vulcanization and secondary trimming technology. Products are burr-free and deformation-free with controllable dimensional deviation. Each batch is equipped with test reports of hardness, tensile strength, deformation and medium resistance for stable and controllable quality.
- Working condition modification and customization strength: Support customized modification of aging resistance, low temperature resistance, wear reinforcement, acid and alkali resistance, flame retardancy and non-precipitation. Custom formula adjustment is available for special working conditions such as high-frequency equipment movement, high pressure impact, outdoor exposure and sterile cleanliness.
- Efficient delivery and supporting services: Fast delivery for standard parts, short-cycle mold opening and mass production for non-standard customization. Support batch graded packaging, specification sorting and OEM supporting, and long-term supporting supply for equipment manufacturers with stable delivery.
Product Q&A
Q: Do Round Rubber Rings support non-standard size customization?
A: Full-dimensional customization is available. We customize round rubber rings with different inner diameters, outer diameters, wire diameters, thicknesses, hardnesses, colors and materials according to customer drawings, samples and parameters. Custom formulas for high and low temperature resistance, acid and alkali resistance and ultra-wear resistance are also supported, adapting to standard equipment and imported non-standard precision equipment.
Q: How to select Round Rubber Rings materials accurately for different working conditions?
A: NBR for conventional oil and hydraulic conditions; EPDM for outdoor water vapor and weather-resistant conditions; FKM for high temperature and strong corrosive solvent conditions; food-grade and low-temperature clean scenarios adopt VMQ silicone; HNBR is preferred for high-pressure and high-frequency wear conditions. Accurate matching greatly extends service life.
Q: What causes water seepage and air leakage after Round Rubber Rings installation?
A: It is mainly caused by mismatched material selection, insufficient compression, installation stretching and distortion, groove scratch by impurities, or over-pressure and over-temperature use. Accurate size matching, correct installation and appropriate material selection can completely eliminate micro-leakage and pressure relief problems.
