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

O-Ring Kits – China Manufacturer & Supplier – Savvy

Product Details: Savvy supplies o-ring kits in various configurations. The kits include o-rings made from materials such as NBR, FKM, and PTFE. Each kit contains 382 or 386 o-rings in 30 different sizes. O-ring splicing kits are also available, which include 9 or 5 o-ring cords of different cross-sections, a splicing jig, a cutting tool, and adhesives. These kits are convenient for on-the-job repairs and allow users to fabricate custom o-rings by cutting and gluing the cord. The kits come in both metric and imperial sizes, with hardness levels of Shore A 70 or Shore A 75[1].

Pros:
– Wide range of o-ring sizes and materials available
– Convenient o-ring splicing kits for emergency repairs
– High-quality o-rings suitable for various applications
– Customizable kits to meet specific customer needs
– Reasonable prices, especially for NBR material

Cons:
– Spliced o-rings have relatively large tolerances
– Requires manual splicing which can be less accurate than mould-pressed o-rings
– Higher cost for FKM material compared to NBR
– Installation and use may require some skill and patience

China O-Ring Kits Suppliers – NNK Oil Seal

Product Details: O-ring kit boxes are comprehensive sets containing various sizes of O-rings, typically made from materials such as NBR (Nitrile), Silicone, FKM, EPDM, and HNBR. These kits are designed for sealing applications in hydraulic, pneumatic, and other industrial systems. They usually include a range of sizes, often organized in a hard-wearing storage box, to ensure easy access and use. The kits are versatile, suitable for static, dynamic, hydraulic, and pneumatic components, and are used in industries such as automotive, aerospace, and mechanical manufacturing[1][2][4].

Pros:
– Provides a wide range of O-ring sizes for various applications
– Made from high-quality materials ensuring superior sealing performance
– Customization options available to meet specific requirements
– Enhances system efficiency by preventing leaks and reducing friction
– Durable and long-lasting, suitable for high-pressure environments

Cons:
– May require specific storage conditions to maintain the integrity of the O-rings
– Limited to the sizes and materials included in the kit, which might not cover al…
– Can be bulky and require significant storage space

Wholesale O-Rings & O-Ring Boxes Manufacturer and …

Product Details: KDIK offers a wide range of oil seals and O-rings made from various materials such as silicone, viton, EPDM, and Buna. These products cater to different industrial applications including automotive, agricultural machinery, construction machinery, and more. Specific products include Auto Oil Seals, Agricultural Machine Oil Seals, Construction Machinery Oil Seals, Truck Wheel Hub Oil Seals, Cassette Wheel Hub Oil Seals, BPW Oil Seals, Combi Oil Seals, TC Rubber Oil Seals, Power Steering Oil Seals and Kits, Hydraulic Pump Oil Seals, Valve Stem Seals, O-rings and O-ring Boxes, Concrete Mixer Gearbox Oil Seals, Compound Gasket Seals, Wheel Cylinder Brake Cup Seals,

and Engine Valve Cover Gaskets.

Pros:
– High performance and extended equipment life
– Enhanced productivity
– Best fit and maximum stability and reliability in applications
– Advanced technology and equipment for production
– Wide range of materials to suit different industrial needs
– Cost-effective solutions for inventory

Cons:
– Seals can fail due to severe cold or extreme temperatures
– Dirt and contaminants can cause seals to break down over time
– Installation may require specific tools and expertise

Soft rubber store o rings – Kin by Rice n Roll

Product Details: The website kinbyricenroll.com appears to be associated with both a restaurant and an online fashion store. However, specific product details for the given URL are not available. The online store section mentions various fashion items such as clothing, accessories, and jewelry.

Pros:
– Variety of fashion items available
– Multiple delivery options including next day, express, and standard delivery
– Extended Christmas returns policy for items purchased during a specific period

Cons:
– Specific product details for the given URL are not available
– The website has been flagged as suspicious in some reviews, which may raise trus…

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

Product Details: Dongguan Hongju Silicone Rubber Products Co., Ltd. specializes in manufacturing custom silicone rubber products, including O-rings. The company uses various materials such as silicone, EPDM, fluoro rubber, Viton, Duprene, NBR, and nitrile. Their O-rings are designed to be waterproof and oil-resistant, making them suitable for applications in electronics, home electric products, machinery, toys, medical equipment, and household products. The company offers OEM and ODM services, allowing customers to customize products according to their specifications. They have advanced equipment including compression molding, injection molding, and die cutting machines to ensure high-quality production[2][3][4].

Pros:
– High-quality products compliant with international safety standards such as CE,…
– Customization options available through OEM and ODM services.
– Rapid prototyping within 3-5 work days using CNC machining.
– Low Minimum Order Quantity (MOQ) to accommodate various customer needs.
– Environmentally friendly materials and processes.
– Experienced and certified staff with excellent English communication skills.
– Advanced equipment ensuring reliable quality and timely delivery.

Cons:
– Factory inspections may be limited due to epidemic restrictions, although online…
– Production cycle can vary from 9-15 workdays depending on order quantity and com…

O Ring assortment’s that don’t suck?

Product Details: O-ring assortments typically include a variety of sizes and materials, such as nitrile, silicone, and Viton. These kits are designed for various applications including plumbing, automotive, and general DIY use. They often come in organized storage cases and may include both SAE and metric sizes.

Pros:
– Convenient to have multiple sizes on hand for different applications.
– Cost-effective compared to buying individual O-rings.
– Organized storage cases make it easy to find the right size.
– Suitable for high-pressure applications due to their rounded edges and circular…
– Available in different materials to suit various environmental and operational c…

Cons:
– May not include every possible size, leading to occasional mismatches.
– Quality can vary, with some users reporting issues with thickness and tolerance.
– Some sets may require purchasing in bulk, which can be inconvenient for small ne…
– Material selection is crucial, and incorrect material choice can lead to poor pe…
– Finding the exact size needed can be challenging.

O-Ring

Product Details: EPDM o-rings are made from a family of synthetic elastomers known as ethylene propylene diene monomer. They are characterized by their lower cost, steam resistance, and chemical resistance, particularly against solvents, acids, and other mild chemicals. The working temperature range is -50°C to 150°C, and the hardness ranges from Shore A 40-90. These o-rings can be cured with either Sulphur or Peroxide, with Sulphur curing being less expensive but potentially resulting in a tacky product, and Peroxide curing offering better chemical, thermal, and aging resistance. They are certified under ISO9001, FDA, and RoHS standards.

Pros:
– Inexpensive with high quality
– Good steam and chemical resistance
– Suitable for applications involving solvents, acids, and other mild chemicals
– Available in various colors, with green being standard
– Certified under ISO9001, FDA, and RoHS standards

Cons:
– Sulphur curing can result in a tacky product and some bloom
– Peroxide curing is more difficult to process
– Lower water compatibility compared to other materials

Shop Wholesale Metric O-Ring Assortment Kit – King Rubber

Product Details: Metric O-ring assortment kits typically include a variety of O-rings in different sizes and materials. These kits are designed to meet various sealing needs across different industries such as automotive, plumbing, and industrial applications. The kits often comply with standardized dimensional parameters like ISO 3601 and may include materials such as Nitrile (NBR), Fluorocarbon (FKM), Ethylene-Propylene (EPDM), and Silicone (VMQ). The kits can range from a few dozen to several hundred pieces, covering a wide range of inner diameters and cross-sectional sizes.

Pros:
– Convenient for multiple applications due to the variety of sizes and materials i…
– Compliance with international standards ensures precise dimensional tolerances.
– Suitable for various industries including automotive, plumbing, and industrial s…
– Often includes a broad range of materials to handle different environmental cond…

Cons:
– May be more expensive than purchasing individual O-rings.
– Storage and organization of the assorted O-rings can be challenging.
– Some kits might not include the exact size or material needed for a specific app…

O Ring Kit – China Supplier, Wholesale

UNIVERSAL SERIES O-RING ASSORTMENT 382pcs 386pcs …

Product Details: The Universal O-Ring Assortment Kit includes a comprehensive set of O-rings made from high-quality nitrile butadiene rubber (NBR) or Viton. The kit is available in various sizes such as 382pcs, 386pcs, 407pcs, and 419pcs. These O-rings are designed for sealing and leak prevention in various applications including plumbing, machinery, hydraulic, and pneumatic systems. The kit comes with a sturdy storage case that organizes the O-rings by size and includes a chart detailing their inner and outer dimensions.

Pros:
– High-quality NBR or Viton construction for durability and resistance to water, U…
– Versatile and reliable for a wide range of home, industrial, and professional ap…
– Organized storage case for easy access and identification of O-ring sizes.
– Comprehensive assortment covering multiple sizes to meet various needs.

Cons:
– May not be suitable for use with gasoline or certain chemicals.
– Storage case may become bulky due to the large number of O-rings.
– Some users might find the variety overwhelming if they only need a few specific…

Comparison Table

Frequently Asked Questions (FAQs)

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

Chinese O-ring factories use a variety of materials, but the most common ones include Nitrile (NBR), Fluorinated Rubber (FKM or Viton), Silicone, Ethylene Propylene Diene Monomer (EPDM), and Hydrogenated Nitrile Butadiene Rubber (HNBR). Each material has its own unique properties and is chosen based on the specific application and required performance, such as resistance to chemicals, temperature, or wear.

Can Chinese O-ring manufacturers provide custom sizes and shapes?

Yes, many Chinese O-ring manufacturers offer customized sizes and shapes to meet your specific needs. Companies like Savvy, Hongju, and SWKS have thousands of molds available and can produce custom O-rings based on your drawings or samples. They also offer various international standards, so you don’t need to invest in new tooling.

What kind of certifications and quality standards do Chinese O-ring manufacturers adhere to?

Chinese O-ring manufacturers often adhere to international quality standards such as ISO 9001, ISO 14001, IATF 16949, and ISO 13485. These certifications ensure that the products meet high-quality and safety standards, making them suitable for various industries, including automotive, aerospace, medical, and more.

Do Chinese O-ring factories offer low minimum order quantities (MOQs) and fast delivery options?

Yes, several Chinese O-ring factories are flexible with their MOQs and offer fast delivery options. For example, some manufacturers like Hongju and Savvy accommodate low MOQs and provide free samples for testing. They also have arrangements with courier companies to ensure fast and cost-effective delivery.

Can Chinese O-ring manufacturers provide additional services such as assembly, packing, and shipment?

Many Chinese O-ring manufacturers offer a one-stop service that includes not only production but also assembly, packing, and shipment. Companies like Xiamen Lindas Hardware Industrial Co., Ltd. and Dongguan Zhongsheng Rubber Products Co., Ltd. provide these additional services to make the process more convenient for their customers.