Multifunctional sealing elements offer numerous advantages for the user. They provide ready-to-install solutions that can be assembled with minimal effort. In service applications, they help prevent counterfeit spare parts, as their typically more complex design makes them difficult to replicate. In operation, additional sealing and fastening elements can often be eliminated, resulting in more streamlined
Flushing pistons that are propelled through hose lines are called “pigs.” They provide clean separation between the preceding paint and the solvent, air, or subsequent paint. This results in extremely short paint changeover times in automated systems, minimal paint waste, minimal solvent consumption, and excellent process quality. Rubber pigs often reach their limits at high
In paint spray guns, a distinction is made between horn air and atomizing air. The needle, on the other hand, is actuated by control air. This acts on a piston against a preloaded spring. Control pistons are also required in paint valves. These are often complex assemblies with numerous seals and channels that separate the
Paint valves often seal using valve seats with conical sealing surfaces. A hard/soft combination with a stainless steel valve seat has proven advantageous. The correct selection of the plastic’s strength (PVDF, PEEK, UHMW-PE) is critical and depends on the closing force of the piston. With the aid of a metal carrier onto which a plastic
To seal lateral movement between flat surfaces, we have developed various types of gate valve seals that meet all the requirements for lubrication-free sealing. This enables tolerance compensation, low friction, minimal dead space, LABS-free performance, and reliable continuous operation. Machining also makes it possible to accommodate virtually any installation space and develop a backward-compatible sealing
This is a proven design principle in which the chemically resistant, low-friction jacket made of polytetrafluoroethylene or ultra-high-molecular-weight polyethylene is energized by a stainless steel spring. This gives the U-cup seal elasticity, provides a low initial contact force, and allows the sealing force to increase with system pressure. Low-friction designs are possible, as are applications
Memory seals are simple sealing-lip designs that offer exceptional performance at minimal cost. In terms of low friction and high sliding speeds (over 20 m/s) under completely dry-running conditions, they set the standard for applications such as dry-running compressors, vacuum pumps, and pneumatic cylinders. Cup seals (piston seals), hat seals (rod seals), and double-acting sealing
In dry-running applications, a wiper seal is required where sufficient lubrication of a rubber seal is not possible. This is the case, for example, in food and beverage processing, the painting and coating industry, pharmaceutical applications, and medical technology. We develop and manufacture wiper seals that operate entirely without lubrication and continue to function even
To allow housings to breathe reversibly during temperature fluctuations, we have developed a technology in which part of the solid PTFE radial shaft seal is made porous. This allows air to flow in and out in a controlled manner while preventing liquid from passing through. Additional pressure-equalization components, such as a porous polytetrafluoroethylene diaphragm, may
To transmit higher forces into a PTFE bellows, reinforcement using sintered-in steel components has often been used. Bellows made of UHMW-PE generally do not require additional metal components. Only because of the somewhat higher thermal expansion are additional steel components sometimes screwed in, snapped into place, or clamped in place.
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