Global O-Ring Manufacturers
Parker Hannifin (USA) is a global leader in sealing solutions, boasting full-size coverage of O-rings with ultra-precise tolerance control (±0.01mm). Its product range includes standard O-rings and Seal-Lok ORFS fittings, made from materials like NBR, FKM, EPDM, and FFKM, which are widely used in hydraulics, aerospace, automotive, and energy sectors. The company holds strict certifications such as AS9100/ISO9001, SAE, FDA, and RoHS, and provides strong engineering support to meet customized demands of high-end industries.
Freudenberg (Germany) excels in vertical material integration, with its patented Simriz® FFKM featuring cross-linking technology that ensures low leakage performance. Its product portfolio covers Simriz® FFKM, EPDM, FKM O-rings, and custom clad seals, targeting chemical, semiconductor, medical, and aerospace fields. Adhering to ISO9001 and ISO14001 standards, its products also comply with USP Class VI and FDA requirements, making them ideal for applications with strict hygiene and corrosion resistance needs.
Trelleborg (Sweden) specializes in large-size O-rings manufactured via one-piece molding, along with high-performance Isolast® FFKM and Quad-Ring anti-twist seals. Its Zurcon® PU seals are renowned for wear resistance, and the products are widely applied in marine engineering, heavy industry, energy, and food processing. The company has obtained certifications like API 6A and NORSOK, ensuring the reliability of its seals in extreme working conditions such as high pressure and low temperature.
Greene Tweed*(USA) is famous for its Chemraz® FFKM, which offers exceptional corrosion resistance and ultra-low leakage (less than 2ppm), suitable for extreme operating environments. Its main products include Chemraz® FFKM seals, PTFE clad rings, and backup ring systems, serving the oil and gas, semiconductor, and pharmaceutical industries. With certifications like API 6A and NORSOK M-710, its products can withstand strong chemical media and high-temperature conditions.
NOK (Japan) has profound technical accumulation in automotive sealing, with its U801 polyurethane seals featuring excellent wear resistance and P-series products adapted to high-pressure scenarios. Its S-series static NBR seals and P-series dynamic polyurethane seals, as well as high-temperature resistant FKM rings, are core components in automotive, construction machinery, and hydraulic systems. The company complies with IATF16949 and JIS standards, ensuring stable quality matching the strict requirements of the automotive industry.
SKF (Sweden) realizes integrated sealing solutions matched with bearings, offering SEAL JET rapid customization services and a wide range of O-ring sizes. Its OR series standard rings and TPU retaining rings are made from NBR, FKM, EPDM, and PTFE, widely used in industrial bearings, hydraulics, and wind power sectors. Holding ISO9001 and ISO14001 certifications, SKF's seals feature high compatibility with bearings, effectively reducing equipment failure rates.
C.Otto Gehrckens (COG) (Germany) operates the world's largest O-ring stock with over 55,000 specifications, enabling fast delivery and precision customization. Its full-material standard rings and 5-piece installation tool kits are widely used in general industry, automation, and hydraulic systems. Complying with ISO9001, DIN, and ISO 3601 standards, COG also provides FDA-certified products, meeting the diverse needs of small-batch and urgent orders.
Garlock (USA) focuses on innovative sealing technologies, with its DETECTOMER® detectable FKM seals and KLOZURE® bearing isolation seals having excellent chemical resistance. The products are applied in food processing, papermaking, and metallurgy industries, holding certifications such as FDA, NSF, and ASTM. Garlock's seals are designed to reduce maintenance costs and extend equipment service life in harsh working environments.
Chinese Key O-Ring Manufacturers
Haining Qianlang Rubber Products Factory is specialized in manufacturing rubber products for more than 20 years. We are located in Haining, Zhejiang Province, nearby Shanghai. We uphold honesty, quality first, customer first for the purpose.
We can supply a wide range of rubber products to satisfy customer requirements, standard parts such as O-rings, quad-rings, V-rings and rubber balls are widely used in all industries. Except the standard parts, we can supply custom made products which now is a large percentage of our business. We can design and produce special products as per drawings or samples with a diverse choice of material and processing technology, and customized rubber parts like grommets, washers, gaskets, bumpers, bushings, plugs, bellows, extrusions and so on. During the past 20 years, we have got much experience of custom solutions.
Our Materials include FKM, NBR, Silicone, EPDM, NR, PU, CR, HNBR, SBR, IIR, SEP,Fluorosilicone, Aflas, FFKM, etc. And other special materials, such as NR & SBR mixture, NBR & PVC mixture, also can be used according to your requirement.
Our Factory in line with Sincerity is the management idea.
Reliable Quality, Reasonable Price and Remarkable Service is our purpose.
We hope to become your most reliable cooperation partner.
We believe the win-win is the true win!
Now we have built good relationships with many customers all over the world, their continual order is a great encouragement to us. We will grow up with our customers and always provide them quality products.
China Zhongding Co., Ltd. has acquired Germany's KACO, leading the domestic market in new energy vehicle sealing solutions. Its motor oil seals and battery pack seals are made from FKM, EPDM, and HNBR, with temperature resistance ranging from -40℃ to 150℃ and leakage rate reaching one ten-thousandth level. Serving major customers like BYD and Huawei AITO, the company complies with IATF16949 and ISO9001 standards, and its products meet IP67/IP69K protection requirements, becoming a core supplier in the new energy automotive industry.
Guangdong Yichi Sealing Technology Co., Ltd. is a representative of precision manufacturing in South China, with over 8,000 sets of molds and an annual output of over 10 billion O-rings, covering inner diameters from 0.77mm to 600mm. Its products are widely used in pneumatics, home appliances, and sanitary ware fields, supporting small-batch rapid delivery. The company's O-rings feature stable quality and high cost performance, meeting the customized needs of mid-to-high-end industrial customers.
Zhejiang Tekway Sealing Co., Ltd. is a leading custom O-ring manufacturer in East China, with over 500 material formulations and mold precision controlled within ±0.01mm. Serving customers like SAIC Motor and General Motors, its new energy battery seals have a leakage rate of ≤0.5Pa·m³/s, adapting to the high-sealing requirements of battery packs. The company integrates R&D, production, and sales, providing one-stop sealing solutions for automotive and industrial equipment industries.