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V Ring

V Ring
Why Choose Us?

Rich Experience

SJK was founded in 1994, focusing on the R & D, production, and sales of special rubber seals, and mastering high-end sealing professional production technology.

High Standard Products

The company mainly produces O-ring, ED ring, rubber gasket, rubber strip, and other sealing products.

 

Complete Qualifications

The enterprise has obtained IATF16949 certification, and has professional experimental facilities, more than 100 sets of advanced production and testing equipment, modern ERP management system, etc.

One-stop Service

In production, SJK has rich experience in seal mold development, and can undertake the design and manufacture of special and complex seals to meet customized needs of customers for special products.

 

Definition of V Ring

 

 

V-rings serve as lip seals or flinger rings. They are used to seal against dust, dirt, grease, oil or water splashes from the outside. The V-ring rotates with the shaft while sealing axially against the counter surface. V-rings are mainly used in combination with other seals, like radial shaft seals, but also as pre-sealing element for bearings. Being available in different types, V-rings provide high flexibility in usage for pressureless operations. Typical applications for V-rings are rolling mills, farm machinery and electric motors.

 

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V ring commonly is installed on shaft. Different from other seals, it has a wide range of applicable sizes, which you can check on our size sheets.
V ring including VA, VS, VL, VB and VXL types. Jiacheng New Material (SJK) has VA and VS in stock with material NBR and FKM.
Other materials and sizes can be custom made according to your requests.

 

Benefits of V Ring

A V-Ring is a solid rubber seal used on shafts to prevent dirt, moisture, and other unwanted material from entering an oil seal, housing, or any other desired area while simultaneously keeping lubricants in. It works by stretching over the shaft to create a tight seal along the shaft while the flexible lip seals lightly against the counterface at a right angle to the shaft. The V-Ring works well on its own and excels when combined with rotary shaft seals to help extend the life of bearings, oil seals, and shafts. Seals provide the same function as V-Rings, but with the added protection of a metal case.

 

Simple
Little prep required when installing. Simply ensure the shaft is clean and try, apply a film of lubricant to the v-ring lip, and slide the v-ring down until the flexible lip contacts the counterface. The lip presses against counterface with little pressure and friction.

 

Economical
Wide tolerances allow one v-ring to fit multiple shaft sizes and to account for substantial shaft misalignment and eccentricity in the shaft. Its durability ensures a long work life and that it won’t be damaged during installation.

 

Versatile
Performs well in dry applications, on rotating shafts and oscillating shafts, and at high speeds over 3000 FPM.

 

 
What size is a V-Ring?

 

Designation

Dimensions
 

Shaft diameter range

Nominal seal width

5 VS V

4.5

5.2

6 VA R

5.5

3.7

6 VA V

5.5

3.7

 

V RING FKM60 Shore Brown VS

 

What Is the Difference Between V Ring and Lip Seal?

V-ring is a solid all-rubber seal. The function of V-ring is to exclude dust, dirt, water, oil splash or other aggressive contaminants from entering into the bearing housing while retaining grease.

 

V-ring acts as flinger, since it rotates with the shaft and causes the lip seal to rotate against the housing or bearing. And as the speed increases, friction decreases due to centripetal force.

 

V-ring can be utilized as either a primary or backup seal and perform an excellent sealing job.

 

 

When Should You Use an V-ring?

Generally speaking, we recommend using an V-ring only in applications where a standard O-ring is insufficient. V-rings are used in a wide range of static and dynamic applications including reciprocating rods and plungers; rotating and spiral movements on shafts and spindles; radial-static seal for bushings and pipes; axial-static seal for flanges and more. In reciprocating applications, they provide reduced running and breakout friction and reduce the risk of spiraling when compared to O-rings.

 

When deciding what sealing solution to choose, other characteristics such as material type, hardness, compression set, tensile strength, elongation, chemical resistance and heat resistance all have to be taken into account. While thousands of stock sizes are available, you may need a custom-designed sealing solution to ensure exceptional performance in demanding applications.

V Ring NBR60 Shore Black VA

 

5 Must-Follow V-ring Maintenance Tips

Following are the five maintenance tips we recommend the most to keep your V-rings performing their best:

 

Inspect V-rings regularly
One of the most critical aspects of maintaining V-rings is routine inspection. Over time, V-rings can become unreliable seals that are brittle. These outdated V-rings may crack or even tear. To prevent leaks or premature failures, inspect your V-rings regularly, especially if they are exposed to corrosive environments, accumulated solids, harsh environmental conditions, or harsh chemicals.

 

Avoid using incompatible chemicals
Some chemicals can degrade or damage certain V-ring materials, causing performance-reducing cracks, stains, discoloration, swelling, shrinkage, or hardness changes. Be sure to select a material compatible with the chemicals used in your application and avoid using any incompatible chemicals that could damage the V-ring.

 

Keep V-rings lubricated
Proper V-ring lubrication can help these sealing solutions maintain flexibility and prevent friction damage. Choose a lubricant compatible with the V-ring material and the application in which it is used, and be sure to apply the lubricant evenly and avoid over-lubricating, which can attract dirt and debris.

 

Clean V-rings regularly
Regular cleaning of equipment and V-rings can help prevent contamination that could lead to premature failures or leaks. Follow the manufacturer's recommendations for cleaning and disinfecting your equipment and V-rings to maintain optimal performance.

 

Replace V-rings on schedule
Even with proper maintenance, V-rings will eventually wear out and must be replaced. Keep tabs on the manufacturer's recommended schedule for replacing V-rings to avoid unexpected failures or leaks.

 

 
Three Steps To Installation: V-Ring

 

Step 1: Lubrication

APG highly recommends lubrication for V-ring installation. We recommend this because a well-lubricated V-ring reduces surface friction and creates a smooth transition for installation. It is essential to choose the right lubricant, and the proper formula will vary based on the type of application as well as the V-ring material. Choose a lubricant that will work with your application and the V-ring.
Compatibility with your application is crucial because you don’t want to clog the system filters or cause other complications. Choosing a lubricant compatible with your V-ring will ensure that it does not shrink or swell, influencing how it performs once installed. Compatibility with your application is also essential because choosing a lubricant compatible with your V-ring will ensure that it does not shrink or swell, influencing how it performs once installed.

Step 2: Confirm Sizing

Once you have confirmed that your lubricant is safe for use with your V-ring and your application, it is a good practice to double-check the V-ring size. The wrong size can lead to a damaged seal, poor performance, or a damaged system.

Step 3: Installation

Once you have verified the lubricant compatibility and size, you are ready to place the V-ring. If necessary, cover any sharp edges during the installation process to avoid damage to the V-ring. Lightly lubricate the V-ring and place it in the groove, sliding it, not rolling it into place. In some instances, special V-ring tools can help to properly place an V-ring that cannot be easily placed by hand. A well-placed V-ring should be slightly stretched before application, but don't over-stretch it. This stretch should be between 1-5%, with 2% ideal for most applications.

 

Your Ultimate Guide To Choosing The Right V-Ring For Your Needs

 

You cannot underestimate the importance of choosing the right v-ring for your application. The wrong choice can lead to decreased performance, increased wear and tear, and even product failure. To prevent that from happening, here are the essential factors to consider when choosing a v-ring for your application:

 

Shaft diameter
The shaft diameter is the diameter of the shaft that the v-ring will seal.
A loose fit can cause contaminants to seep in, while a tight fit can lead to excessive wear and tear.
Use a micrometer or caliper to measure the shaft diameter with precision.

 

V-ring size
V-rings are available in various sizes—from small to large—and choosing the wrong size can have disastrous consequences for your application.
If it's too small, it won't fit securely, and if it's too large, it won't create a tight seal.
It's a good idea to refer to the manufacturer's catalogue or online resources to find the perfect v-ring size for your application.

 

Shaft tolerance
It's a critical factor that you cannot afford to overlook.
The shaft tolerance is the allowable deviation from the nominal shaft diameter.
It is crucial to choose a v-ring that matches the shaft tolerance to ensure proper sealing.

 

V-ring material
V-rings come in different materials like nitrile, viton, and silicone—each with unique properties like temperature range, chemical resistance, and hardness.
If you choose a material that isn't suitable for your application, you put your products at risk.
You can consult your v-ring manufacturer or supplier if you are unsure of what material to choose.

 

V-ring type
There are different types of v-rings available, including standard, tapered, and custom designs, each with its own unique advantages.
Standard v-rings are great for most applications, but for those with larger shaft diameters, tapered v-rings may be the way to go.
And if you need a v-ring with specialized properties, like high temperature or chemical resistance, custom designs can be tailored to meet your exact needs.

 

Operating conditions
It's essential to choose a v-ring that can withstand operating conditions to ensure optimal performance and longevity.
High temperatures or harsh environments require a durable v-ring material that can stand up to the challenge.
But if your application requires low pressure and temperature, a softer material will do the trick.

 

Installation
Improper installation can lead to product failure and costly downtime.
Some v-rings require specialized tools or techniques, while others are a breeze to install.
To ensure proper sealing and avoid installation headaches, choose a v-ring that's easy to install and fits securely. The right v-ring can make all the difference in the performance and longevity of your product.

 

 
Our Factory

 

Zhejiang Jiacheng New Material Co.,Ltd. (SJK for short) was founded in 1994, focusing on the R & D, production, and sales of special rubber seals, and mastering high-end sealing professional production technology. The company mainly produces O-ring, ED ring, rubber gasket, rubber strip, and other sealing products.

 

 

As a leading enterprise in domestic fluorine material sealing industry, SJK always keeps in mind the enterprise mission of "Striving for maximum interests of enterprises and customers". At present, SJK has won the trust and recognition of many well-know customers at home and abroad, and its sales network has covered Europe, America, the Middle East, Southeast Asia, and other places. With the vision of "becoming a world famous seal brand", SJK keeps forging ahead, has the courage to shoulder social responsibility, and abides by the core values of "honesty, pragmatism, innovation, and win-win". Strive to build the first brand of high-end seals.

 

 
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Our Certificate

 

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Ultimate FAQ Guide to V Ring

 

Q: What are the different types of V-ring?

A: VA: The most common style. Available in wide range of sizes from 2.5MM ID to 1810MM ID. They have a short mounting length and are commonly used in gearboxes, electric motors, and drives.
VS: Available from 4MM ID to 180 MM ID and typically found in agricultural and automotive environments.
VL: Available from 99MM ID to 540MM ID. They have a short mounting length and are designed for use when the sealing house is limited or as part of a labyrinth sealing application.

Q: How to make an V-ring seal better?

A: Using Lubricant to Make V-rings Seal Better. Applying oil or grease will protect the V-ring from damage when used. Lubricants also protect components by minimizing friction, providing water resistance, or preventing environmental degradation.

Q: Should an V-ring be tight?

A: To provide an effective seal, the V-ring's inside diameter (I.D.) must be smaller than the piston groove diameter, so that the V-ring is slightly stretched, fitting snugly in the groove. This stretch should be between 1%-5% with 2% as the ideal in most applications. A stretch greater than 5% is not recommended.

Q: How to install a V-ring?

A: Lightly lubricate the V-ring and place it in the groove, sliding it, not rolling it into place. In some instances, special V-ring tools can help to properly place an V-ring that cannot be easily placed by hand. A well-placed V-ring should be slightly stretched before application, but don't over-stretch it.

Q: What is the difference between V-ring and lip seal?

A: V-ring is used on shafts. It works by stretching over the shaft to create a tight seal along the shaft while the flexible lip seals lightly against the counterface at a right angle to the shaft.

Q: What is the use of V-ring?

A: V-rings serve as lip seals or flinger rings. They are used to seal against dust, dirt, grease, oil or water splashes from the outside. The V-ring rotates with the shaft while sealing axially against the counter surface.

Q: V-ring: What is seal V?

A: The function of a V-seal is to exclude dirt, water or other aggressive media from entering bearing housings while also retaining grease. The V-seal stretches over the shaft and assumes a tight interference fit. The V-seal rotates with the shaft causing the lip to rotate against the housing or bearing.

Q: What happens if you over compress an V-ring?

A: If an V-ring cross section is too large, it over packs the gland which can cause failure. "The V-ring must be displaced in the gland, or else the force to compress the V-ring will exponentially grow," said Tranquilli. "This means it won't fully compress, which leads to leak paths for the fluid to escape."

Q: How to maintain v-ring?

A: Cleaning the v-ring is a simple matter of wiping it with a damp, soft cloth to remove the foreign matter. Be careful the cloth you use does not leave any of its own material behind as this can also affect the effectiveness of the seal.

Q: How to properly size an V-ring?

A: Here is how to properly measure an V-ring:
Place the V-ring on a level, flat, and clean surface.
Determine the CS by measuring the thickness of the V-ring.
Determine the ID by measuring from one inner edge to the other inner edge.
Determine the OD by measuring from one outer corner to the other outer corner.

Q: Why is my V-ring not sealing properly?

A: Contributing Factors: Incorrect groove or gland design. Improper V-ring sizing. Hardware damage or misalignment. Suggested Solutions: Underperforming V-ring seals can typically be improved by optimizing the V-ring size or gland design for the specific application conditions.

Q: How do you keep an v-ring in place?

A: Lubricate v-rings. Using a lubricant for v-ring assembly can help prevent damage to the part. Applying a thin film of lubricant to the v-ring fills in any gaps or spaces where the v-ring joins the mated part or parts, prevents drying out, reduces tension between the surfaces, and fits the part more tightly in place.

Q: How can I make my v-rings last longer?

A: To properly function, v-rings must be lubricated. Not only will lubrication help the seal last longer, but it will also prevent breakdowns of machinery, motors, engines, or other devices the seal is meant to protect should it fail. Applying oil or grease will protect the v-ring from damage when used.

Q: Why is my v-ring not staying in place?

A: This is often due to difficulty in accessing the location of the v-ring installation, or because the v-ring is very small. An assembly error can result in the v-ring not fitting properly into the groove, or in the v-ring being stretched or compressed. The v-ring is then no longer tight, which leads to leakage.

Q: How to rejuvenate a rubber v-ring?

A: For smaller, lightly weathered rubber seals, a simpler method is sometimes just as effective; boil some water in the saucepan, add a small amount of soap, and submerge the seal. Every 5 minutes or so, remove the seal using tongs and test its flexibility and condition.

Q: Can I use olive oil to lubricate an v-ring?

A: Vegetable oil isn't just for use in the kitchen. Some engine manufacturers recommend vegetable oil to lubricate v-ring seals. In these applications, if petroleum-based lubricants are used, the result will be swelling and cracking of the seal, leading to a leak.

Q: What is the number one cause of v-ring failures?

A: Compression set occurs when an v-ring becomes squashed into a flat-sided oval. It won't recover after removing the stressor, and it has permanently "set" into the deformed shape. Compression set is one of the most common causes of v-ring failure.

Q: What's the advantage of V-ring seals?

A: Hydraulic couplers with V-ring seals provide various advantages over metal to metal connections. Metal hydraulic fittings are more prone to over-tightening which can distort fitting components and allow leakage. Excessive torque can allow leakage by stripping threads or cracking components. A hydraulic coupler with an V-ring fitting provides a metal to rubber seal which does not distort metal components. Additionally, the metal to rubber seal provides a tangible feeling when connection is too tight and is easier to detect when a fitting has been over tightened to prevent future problems.

Q: Do I need an V-ring?

A: If you're in the beginning stages of the design of your device or equipment, you may be able to use either a gasket or an V-ring. This depends on factors like applications, environment, tolerances and general function. V-rings need a cylindrical groove to sit in while gaskets can perform on a flat surface.

Q: How do you know if an V-ring needs to be replaced?

A: If they are cracked or damaged in any way, it's time for new ones. It's also a good idea to replace V-rings if they look worn or stretched out. Poor performance: If you notice that your equipment isn't performing as well as it used to, V-rings may be the culprit. Over time, V-rings can degrade and lose their effectiveness, so it's important to replace them on a regular basis to maintain peak performance.

Q: Where are V-rings commonly used?

A: V-rings are very commonly found in pumps, cylinders, connectors and valves, helping to seal joins between separate parts and prevent leaking of fluids and gases. They're used with static, dynamic, hydraulic and pneumatic components, making them an especially versatile solution to a very widespread engineering issue.

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