At Rubrings Company, we manufacture precision-engineered pneumatic seals that are specifically designed to prevent the leakage of air and protect against the ingress of contaminants in pneumatic systems such as cylinders. These seals are ideal for low-pressure applications and play a vital role in the efficient functioning of a wide range of industrial machinery. Our pneumatic seals are suitable for both rotary and reciprocating motion, offering excellent sealing performance even under high-speed operations. Given the demands of pneumatic cylinders—such as higher operating speeds and the need for lower friction—we ensure our seals are manufactured using advanced materials that minimize wear and maximize service life. Rubrings pneumatic seals are trusted by industries across India and global markets for their reliability, precision, and consistent performance.
Common pneumatic seals include piston seals, V-rings, wipers, symmetrical seals, rotary shaft seals, wear rings, static seals, buffer rings, back-up rings, u-cups, gaskets, and even an O-ring. Depending on your needs, pneumatic seals can be single or double acting. The single-acting pneumatic seals are only used for one axial direction. The double-acting pneumatic seals are used in both directions for a reciprocating motion. These seals can be made of polyurethane, FPM/Fluorocarbon rubber, nitrile, silicone, EPDM, and some PTFE.
Rod Seals are the most critical seals in a hydraulic cylinder. Rod Seals are radial internal seals. Rod Seals are press-fit into a housing bore with the sealing lip contacting the shaft. Rod Seals are also referred to as shaft seals sometimes. Rod Seal failure could result in fluid leakage. Special care should be shown in selecting the best Rod Seal for your sealing application. Rod Seals act as a dynamic seal along its inner diameter and static along its outer diameter. Rod Seals are affected by changes to the rod surface and fluid temperatures. Rod Seals often see the highest pressure variation. Rod Seals are often the decisive factor in the function of a hydraulic cylinder.
A wiper, also known as a rod wiper, dust seal, excluder or scraper, is a ring in a cylinder that is used to wipe or scrape dirt from the rod or shaft. A wiper helps prevent dirt particles from entering the hydraulic system. A rod wipers main function is to keep the rod and cylinder clean and free from foreign matter preventing premature failure. The wiper is not a pressure sealing element. Wipers most commonly snap into a groove. Some other wipers are made to press into a groove, such as a metal clad wiper. A wiper seal can be made and can function as a wiper and a rod seal all in one groove where space is an issue.
Piston Seals are radial seals. Piston Seals are external seals. Piston Seals fit onto shafts with the sealing lip contacting the housing bore. Piston seals may also be known as Piston Packing. Piston Seals are mounted on a piston head which moves thru the bore of a hydraulic cylinder. Piston Seals can either be single acting or double acting seals. Piston Seals are usually used in conjunction with bearings and guide rings. Piston Seals are typically made of polyurethane but some piston seals can be made of fabric reinforced rubber.
