Applications involving radial shaft seals for pumps often require product or lubricant leakage to be drained away to prevent cross-contamination. In some cases, quench or cleaning media (CIP, steam sterilization) must be supplied continuously or intermittently between the sealing lips. For this purpose, we offer complete radial shaft seal module solutions that incorporate all sealing
For use in a pneumatic rotary union, we have developed a pressure-relieved solution in which the sealing lips are automatically relieved in proportion to the system pressure. This ensures an optimal, minimal contact pressure across the entire pressure and speed range, resulting in exceptionally low leakage rates with minimal friction.
A so-called solid radial shaft seal is machined from tube or solid stock and formed to the nominal shaft diameter so that it can also be optimized for low friction. The sealing lips can be designed to face either the same or opposite directions, allowing two media to be separated (e.g., food products from gear
Ultra-high-molecular-weight polyethylene (UHMW-PE) is the PFAS-free alternative material to PTFE. Due to the strength of this often underestimated material, radial shaft seals made of UHMW-PE can generally be designed as one-piece components. They are also manufactured by machining, although this requires extensive manufacturing expertise. The housing can incorporate sealing lips, O-ring grooves, wrench flats, threads,
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
For a reliable sealing system, the mating surface is of critical importance. For this reason, our customers often request that the shaft sleeve be supplied as well. We can provide running surfaces with DLC coatings, tungsten carbide, chromium oxide, or other surface treatments such as gas nitriding or roller burnishing. The result is a ready-to-install