Are you looking for the best O-ring factories in China? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top O-ring manufacturers in China, highlighting their strengths, product ranges, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司

China O Rings Manufacturers and Suppliers

Top 10 O-ring Manufacturers and Suppliers in China (2024)

Perfluoroelastomer FFKM O ring Manufacturer

FKM O Rings, China NBR O Ring supplier

China O-Ring Kits Suppliers – NNK oil seal

Product Details: The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 of the most popular sizes, both in inches and millimeters. The O-rings are made from commercial-grade nitrile butadiene rubber (NBR) and fluoroelastomer (FKM) materials, offering oil, chemical, and high-pressure resistance. The kit is suitable for various applications, including machines and excavators. The O-rings have a hardness range of 60-90 Shore A and can operate in temperatures from -40°C to 260°C. The kit comes in a practical resealable plastic case and is certified with ISO9001/TS16949 standards.

Pros:
– High-quality materials (NBR and FKM) providing excellent oil and chemical resist…
– Wide range of sizes (30 sizes) to fit various applications
– Durable and long-lasting with thick wall construction
– UV resistant and suitable for use with liquids such as oil
– Certified with ISO9001/TS16949 standards ensuring high quality
– Practical resealable plastic case for storage

Cons:
– Limited to specific materials (NBR and FKM), which may not be suitable for all e…
– No mention of availability for custom sizes or special orders beyond the standar…
– May require additional backup rings for elevated operating pressure environments

O-Rings, Rubber Seals – Best China Manufacturer & …

Product Details: Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used materials are NBR, FKM (Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM/Viton offers the best comprehensive performance and is used in high-standard sealing equipment. Silicone is often used in medical and food industries due to its FDA compliance, tastelessness, non-toxicity, and resistance to high temperatures and severe cold. The temperature range for these o-rings varies, with Silicone ranging from -70°C to 220°C. The hardness of o-rings is measured in Shore A,

typically ranging from 40 to 90, with 60-70 being the most common. Savvy also produces custom o-rings, encapsulated o-rings, backup-rings, x-rings, and more.

Pros:
– High-temperature and FDA food grade compliance for certain materials
– Wide range of materials available (NBR, FKM/Viton, Silicone, etc.)
– Good wear resistance and oil resistance
– Easy to install with appropriate hardness levels
– Custom o-ring production available at low mold/tooling costs
– Fast delivery options

Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install
– Specific materials have limitations (e.g., Silicone generally uses Shore A 60, w…

Viton O Ring Suppliers, Manufacturers, Factory

Xiamen Seals Technology Co.,Ltd: China O-Rings, X- …

O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal

Product Details: Hongjie offers a one-stop O rings OEM/ODM solution. They provide custom options including design, color, packaging, and logo. The company adheres to various international O-Ring standards, and most sizes are already tooling, eliminating the need for additional investment. They use well-known raw material suppliers to guarantee product quality and have certificated compounds to meet specific market requirements. Hongjie also has a certificated laboratory to develop and identify match compounds per customer specifications or ASTM D200 call out.

Pros:
– One-stop O rings OEM/ODM solution
– Custom options: design, color, packaging, logo
– Adherence to various international O-Ring standards
– Most sizes already tooling, no additional investment needed
– Use of well-known raw material suppliers
– Certificated compounds for specific markets
– Certificated laboratory for compound development and identification

Cons:
– No specific information on pricing or cost-effectiveness provided on the page
– No details on minimum order quantities (MOQ) or lead times

Comparison Table

Frequently Asked Questions (FAQs)

What types of materials are commonly used to make O-rings in Chinese factories?

Chinese O-ring factories often use a variety of materials, but the most common ones include Nitrile Butadiene Rubber (NBR), Fluorinated Rubber (FKM or Viton), and Silicone. NBR is popular due to its good properties and low cost, FKM is known for its excellent comprehensive performance, and Silicone is favored in medical and food industries for its non-toxic and temperature-resistant qualities.

Can Chinese O-ring manufacturers provide custom-made products?

Yes, many Chinese O-ring manufacturers offer custom-made products. Companies like Savvy, Xiamen Lindas Hardware Industrial Co., Ltd., and SWKS Seal can produce O-rings in various sizes, shapes, and materials according to your specifications. They often have a wide range of molds and advanced manufacturing capabilities to meet your specific needs quickly and efficiently.

What are the typical applications of O-rings produced by Chinese factories?

O-rings from Chinese factories are widely used in various industries, including hydraulic and pneumatic systems, automotive, aerospace, medical equipment, and military applications. They are essential for sealing fluids such as air, water, and oil, and can be used in both static and dynamic sealing conditions.

How do Chinese O-ring manufacturers ensure quality and reliability?

Chinese O-ring manufacturers often adhere to strict quality control standards. Many of these companies, such as Jiangyin No.3 Rubber Manufacturer Co., Ltd. and DMS Seals Technology Co., Ltd., are certified with ISO 9001 and other international standards. They conduct thorough quality checks and tests on each product before shipping to ensure high-quality and reliable sealing solutions.

What kind of additional services do Chinese O-ring factories typically offer?

Besides manufacturing, many Chinese O-ring factories provide additional services to make the process smoother for you. These services can include assembly, packing, and shipment of products, as well as on-site service support. Companies like Xiamen Lindas Hardware Industrial Co., Ltd. and DMS Seals Technology Co., Ltd. also offer prompt delivery and customization options to meet your specific needs.