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.
Anhui Worldtop Sealing Industry Co., Ltd.
It is an integrated enterprise integrating R&D, production and sales. Its product range covers more than 60,000 specifications including quad-rings and O-rings, with over 6,000 sets of molds in stock, complying with standards such as American Standard AS 568 and Japanese Standard G/P. It uses imported raw materials like NBR and FKM, and adopts precision equipment such as vacuum flat vulcanizing machines. It has a daily delivery capacity for conventional models and provides mold-free supply for common specifications, which is widely used in hydraulic, pneumatic and other fields.
Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd.
Founded in 2012, it has a modern workshop of over 4,000 square meters and a professional team accounting for 15% of the staff. It is proficient in producing quad-rings and other sealing components for the automotive, medical and hydraulic industries. It conducts comprehensive tests on the temperature resistance and corrosion resistance of quad-rings. It can not only supply standard models in batches, but also quickly respond to non-standard customization needs. Its products are exported to Russia, the United States and other countries.
Jinborn (Xiamen) Rubber Technology Co., Ltd.
This company focuses on R&D and production of rubber seals, and its quad-ring products are mainly made of nitrile rubber, which has excellent oil resistance and wear resistance. It produces in strict accordance with the national standard GB 1235.76 to ensure the dimensional accuracy of quad-rings and compatibility with various accessories. It provides flexible customization services and has established stable cooperative relations with enterprises in the automotive and instrumentation fields, with reliable product stability in complex working conditions.
Shenzhen Xinhua Xu Rubber Products Co., Ltd.
Established in 2004, it has advanced production and testing systems and a strict whole-process inspection mechanism for quad-rings and O-rings. It introduced an ERP system as early as 2012 to optimize production management. Its quad-ring products are made of materials such as silicone rubber and nitrile rubber, which are suitable for electronic appliances, machinery and other industries. It has won a good reputation in the industry for its efficient delivery capacity and stable product quality.
Wuhan Tieling Hydraulic Sealing Co., Ltd.
Specializing in hydraulic system supporting seals since 2002, its quad-rings are made of high-pressure and wear-resistant rubber materials, which are particularly suitable for harsh working conditions of engineering machinery and mining machinery. The company has strong product design and processing capabilities, and has a complete quality management system. Its quad-rings have been recognized by the industry for their excellent sealing performance and long service life in hydraulic equipment.
Dongguan Hongju Rubber Products Co., Ltd.
It is good at producing high-performance sealing products such as silicone rubber and fluororubber. Its quad-rings meet ISO 3601 standards and have passed international certifications such as CE and ROHS. It can customize quad-rings of different materials and specifications according to customer needs, which are widely used in engines, pumps and valves. It has the advantages of small minimum order quantity and rapid prototype production, which is favored by small and medium-sized enterprise customers.
Suzhou Baoshida Rubber & Plastic Co., Ltd.
It covers a variety of sealing products including quad-rings, and its main materials include NBR, FKM and silicone. The FKM-made quad-rings produced by the company have excellent comprehensive performance and are suitable for high-standard sealing equipment. The silicone quad-rings comply with FDA standards, are non-toxic and tasteless, and are widely used in the medical and food industries. It can provide products of different hardness levels from 40 to 90 Shore A.
Qingdao Haorui Sealing Technology Co., Ltd.
Relying on Qingdao's industrial advantages in rubber and machinery, the company focuses on the R&D and production of industrial sealing parts. Its quad-rings are characterized by high precision and strong environmental adaptability. It adopts imported vulcanization equipment to ensure the consistency of product size and performance. The products are mainly supplied to the local automotive and shipbuilding industries, and also exported to Southeast Asia. It provides technical consultation and after-sales maintenance services while supplying goods.
Shanghai Chengtai Sealing Products Co., Ltd.
It is an enterprise integrating R&D and production of rubber seals. Its quad-ring products cover a full range of specifications, which can meet the needs of aerospace, precision instruments and other high-end fields. The company has a professional R&D team, which can develop special quad-rings resistant to high temperature, strong corrosion and other extreme conditions. It adheres to high-standard quality control and its products are trusted by many high-end equipment manufacturers.

