Back-up rings are mainly used to serve the exact function their name implies. They are a firm seal designed to “back up” other materials that are in place to prevent the primary rings (usually o-rings) from slipping or extruding, which could lead to severe damage and thus unwanted leakage.

While o-rings may be enough of a seal under low pressure situations, at higher pressures they may fail if not paired with another hard rubber or contoured seal.

The document embedded to the left is a PDF of our Rubber World Back-up Rings Sizing Chart.

For detailed information on all of our standard-sized back up rings, click on the thumbnail to enlarge it. We can also send you a copy and give you a quote via email. Simply complete the form on our contact page so we can get in touch with you.

Along with our standard sizes, we have assisted many businesses with custom-sized rings and seals. The engineers at Rubber World Industrial Co., Ltd. have decades of experience and we are here to make sure you get the correct size and quality rubber rings you or your customers need.

Located in northern Taiwan, we have English, Mandarin Chinese, and Taiwanese speakers on staff, all with vast international business experience, waiting to help with your inquiry. We are as experienced with international business practices, customs, and logistics as we are with rubber manufacturing, so you can be rest assured with our ability to get your products manufactured and into your hands as quickly and easily as possible.

U-cups, sometimes referred to as U-ring seals, are a seal that is very commonly used in pneumatic cylinders and other hydraulic applications. They get their name from the very distinct “U” shape the seal appears to have if you cut one in half.

They are excellent for low pressure and low speed situations.

Rubber World’s AN-6226 standard sized u-cups are just one of the many designs we can manufacture.

The document embedded to the left is a PDF of our Rubber World AN6226 U Cup Sizing Chart. Make sure to contact us with your inquiry if you do not see the size that you need on the list. We are available via email, telephone, and even fax.

We work with many different materials and our long history in the rubber seal manufacturing business has let us develop many great working relationships with materials providers. That means we can find the best quality manufacturing materials at tremendous prices, and pass off the savings to you.

From design, to manufacturing, to quality control, our team works diligently to make sure you get the quality product you need in a timely fashion. Since we do all of our work in-house, we can oversee all the fine details that separate shoddy work from truly excellent manufacturing. Make sure you get the quality you need and deserve.

Let the experts at Rubber World Industrial Co., Ltd. help you with your u-cup and other rubber seal manufacturing needs today!

Vee packing (or v-packing) is a special type of seal that is often an integral part of rods and pistons. The female and male rings nest into one another to form a very tight yet flexible seal, which is suitable for both low and high pressure applications.

The document embedded to the left is a PDF of our Rubber World V-Packing Sizing Chart.

While fully readable as is, please feel free to download or save it to your computer, or contact us and we can email you a copy. All sizes are calculated using the metric system.

The chart consists of 5 important pieces of information about these standard sized products. Starting from left to right they are the Rubber World part number, the outside or external dimensions (OD), the interior dimensions (ID), the height of one complete 1+3+1 set, and the height of a single ring.

Pricing is determined by individual customer quotes, so please contact us is you have any questions or wish to receive a quote. All of our contact information is also included on the document, such as our address, phone and fax numbers, and email address. You can also contact us here by completing and submitting the simple form.

We have decades of experience working with this kind of seal, and have successfully manufactured products for dozens of companies using different fabrics and rubbers with their v-packing, so please let us know what you need. We will use all of our acquired knowledge to make your product meet your specifications.

Both English and Chinese (中文) is OK in regards to correspondence.