Are you looking for the best double-lipped seal factories in China to ensure top-notch quality and reliability for your industrial needs? Let’s dive into a comparison of the leading manufacturers, highlighting their strengths, product ranges, and what sets them apart in the industry.

Double Lip Rotary Shaft Metric TC Oil Seal/ Oil seal in china

China Double Lip Seal Manufacturer and Supplier, Factory

Chinese seals & bearings

Product Details: The discussion on the Arborist site focuses on bearings and seals, particularly those of Chinese origin. Key details include the importance of using bearings with a Teflon or plastic cage, especially for high-rev applications, as they are more durable and less likely to cause damage to the piston and cylinder in case of failure. The bearings are identified by numbers such as 6202, 6203, and are rated for clearance (C1, C2, C3), with tighter bearings being more suitable for certain applications.

Pros:
– Bearings with Teflon or plastic cages can tolerate higher revs and reduce the ri…
– Using known brand bearings, even if not factory original, can be cheaper and mor…
– Tighter bearings (e.g., C2) may be more suitable for high-speed and high-heat ap…

Cons:
– Chinese bearings are reported to be of poor quality and prone to quick failure.
– Metal cage bearings have a higher failure rate, especially in high-rev applicati…
– Using low-quality bearings can risk damaging the equipment and lead to frequent…

Double Lip Frame Oil Seal

Product Details: The double lip oil seal is designed for use in mud pump crossheads. It is typically made from NBR rubber, which offers a working temperature range of -40°C to +260°C and a working pressure of 0.03-0.98 MPa. The seal dimensions can vary, such as 5″× 6.25″× 0.625″, and it is crucial for sealing the crosshead area to prevent oil leakage and maintain pump efficiency. The seal consists of two lip oil seals, oil seal rings, O-rings, and a locking spring for secure installation.

Pros:
– Effective in preventing oil leakage and maintaining pump efficiency.
– Durable NBR rubber construction with a wide working temperature range.
– Easy to install with detailed assembly instructions.

Cons:
– Requires precise installation to avoid damage or leakage.
– May need periodic replacement due to wear and tear.

Ø 30mm-38mm NBR Double Lip Seal TC/FB Skeleton Oil …

Product Details: The 30mm-38mm NBR Double Lip Seal TC/FB Skeleton Oil Seal is designed for rotation shaft applications. It is made from NBR (Nitrile) material, which is known for its resistance to oil and fuel. The seal has a double lip design, providing enhanced sealing performance and protection against dust and other contaminants. The dimensions of the seal are 30mm (inner diameter) and 38mm (outer diameter). It is suitable for various industrial and mechanical uses where reliable sealing is crucial.

Pros:
– Made from NBR material, resistant to oil and fuel
– Double lip design for enhanced sealing performance and contamination protection
– Suitable for various industrial and mechanical applications

Cons:
– No specific cons mentioned in the product description
– No information on durability or lifespan provided

China OEM Factory Customized Rubber Seal Double Lip …

Product Details: The double-lip rotary shaft seal is designed for oil or grease retention. It features a spring-loaded double-lip design with a garter spring to maintain constant radial lip force for optimum sealing. The seal has a primary lip for sealing and a secondary lip for protecting against contaminants and retaining lubricants. It is available in various materials such as Duralast, Fluoroelastomer (FKM), and Nitrile (NBR), each with different operating ranges for temperature, pressure, and surface speed.

Pros:
– Provides effective sealing against oil and grease leakage.
– Secondary lip offers protection against light airside contaminants and acts as a…
– Available in various materials to suit different operating conditions.
– Optimized seal lip design ensures constant radial lip load for better sealabilit…
– Can be customized for different shaft diameters and housing requirements.

Cons:
– Requires proper installation to avoid damage to the sealing lip.
– May not perform well in extreme conditions without additional protection (e.g.,…
– Needs suitable lubricant between the two sealing lips for maximum service life.
– Limited to specific pressure and temperature ranges depending on the material us…

china heavy duty seal supplier, china seal group company …

Product Details: The Long-Lifetime Double-Lip Seal is designed for low-pressure applications and features a dual lip design with a garter spring to enhance sealing performance. The seal has a rubber-covered outer diameter (OD) for improved sealing ability and an additional dust lip to protect the primary sealing lip from contaminants. It is suitable for use in polluted environments and requires adequate lubrication between the sealing lips for optimal performance. The seal can operate within a temperature range of -22 to 400°F (FKM material) and is recommended for applications such as gearboxes, pumps, and electric motors.

Pros:
– Provides effective protection against contaminants and dust
– Suitable for use in polluted environments
– Long-lasting performance with proper lubrication and maintenance
– Can operate over a wide temperature range
– Versatile application in various machinery such as gearboxes, pumps, and electri…

Cons:
– Requires regular lubrication to maintain performance
– May not be suitable for high-pressure applications
– Installation must be done correctly to avoid premature failure
– Exposure to harsh chemicals can degrade the seal material

Split Type TSN218G Seal For Bearing Housing …

Shaft Oil Seal TC Type Size 10185mm Rubber Covered …

Product Details: The TC Oil Seal is a low-pressure dual lip radial seal with a garter spring, designed to protect against contaminants. It features a rubber-covered OD to enhance sealing ability, and the internal face of the steel case is partially rubber-covered. The seal includes a primary sealing lip and an additional dust lip to protect against dust and other contamination. It is made from a metal case (SAE 1008-1010 Carbon Steel), a nitrile rubber sealing element, and a spring (SAE 1050-1095 Carbon Spring Steel). The seal operates within a temperature range of -22 to 400°F (FKM) and can handle a maximum

pressure of 7 psi and surface speed of 2000 ft/m. Common materials include NBR, FKM, EPDM, and HNBR[1][2][4].

Pros:
– Very good static sealing and thermal expansion compensation
– Greater roughness is allowed in the housing
– Reduced risk of corrosion
– Sealing for low and high viscosity fluids
– Protection against undesirable air contaminants and dust
– Effective in polluted environments

Cons:
– Limited chemical resistance to certain substances like aromatic hydrocarbons, ch…
– Requires adequate lubricant between the two sealing lips to maximize performance
– Temperature limitations depending on the material used (e.g., -40°C to 120°C for…

Double Lip Oil Seal Shaft Sealing 8187

Product Details: The Double Lip Oil Seal Shaft Sealing 8187 is a radial shaft seal designed to ensure the maximum service life and reliability of a rotating shaft and the bearing. It features a rubber-covered outer diameter (O.D.) and a spring-loaded sealing lip, along with an additional dust lip. The sealing lip is trimmed on the front face. This seal is made to prevent lubricant leakage and protect against dust and other contaminants. The dimensions of this seal are 8 mm (inner diameter) * 18 mm (outer diameter) * 7 mm (width)[4].

Pros:
– Helps extend the service life and reliability of the rotating shaft and bearing
– Prevents lubricant leakage
– Protects against dust and other contaminants
– Features a spring-loaded sealing lip for enhanced sealing performance
– Additional dust lip for extra protection

Cons:
– Limited temperature range not specified in the provided source, but generally Vi…
– May require specific installation tools and techniques to ensure proper sealing

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Double Lip Seal Factories in China

What materials are commonly used in double lip seals produced by Chinese factories

Double lip seals from Chinese factories are often made from a variety of materials, including Nitrile Rubber (NBR), Fluororubber (FKM), Silicone Rubber, and Polyurethane (PU). Some seals also incorporate stainless steel and PTFE for enhanced durability and performance.

What are the typical applications of double lip seals

Double lip seals are widely used in various industries, including automotive, industrial machinery, hydraulic systems, and bearing housing components. They are designed to seal against oils, greases, water, and other media, making them versatile for different fluid and pneumatic systems.

How do Chinese factories ensure the quality of their double lip seals

Chinese factories emphasize strict quality control measures throughout the production process. This includes using advanced manufacturing facilities, vacuum vulcanizing machines, and temperature-controlled ovens. Additionally, many factories have ISO9001 and other international certifications, ensuring that every seal meets high standards.

What is the typical delivery time for double lip seals from Chinese factories

The delivery time for double lip seals can vary depending on the factory and the availability of the product. Generally, if the goods are in stock, delivery can take 3-7 days. For bulk orders or custom-made seals, the delivery time can range from 15-30 days.

Can I request custom or sample orders from Chinese double lip seal factories

Yes, you can request custom or sample orders from many Chinese double lip seal factories. They often offer customizable options to meet specific requirements and provide free samples, although you may need to cover the cost of freight. This allows you to test the quality and suitability of the seals before placing a larger order.