VR single lip shaft seals are designed to excel across diverse applications. Engineered for efficiency and reliability, these seals ensure optimal performance even in constrained spaces. For applications with limited clearance, we offer a narrow variant, providing seamless integration without compromising functionality.
The operating mechanism of the springless VR radial shaft seal is based on rubber-elastic membrane bodies being precisely tensioned over support bodies made of stainless steel or other metals. The subsequent sealing lip, arranged at an oblique angle, can point either outward or inward depending on the installation position and the direction of the medium to be sealed.
This mechanism relies on the radial and tangential pre-tensioning of the membrane body, resulting in a spring-like effect between the membrane body and the sealing lip. Consequently, both radial and tangential forces acting on the sealing lip are balanced in rotating shafts, thereby reducing resulting shear stresses. Vibrations as well as static and dynamic runout deviations are directly absorbed in the area of the sealing lip. The design of the seal minimizes the partial lifting of the sealing lip in rotating shafts and the associated pumping effect.
Comparative measurements have shown that the VR seal requires only 1/3 to 1/4 of the radial force compared to the worm spring-supported sealing element while maintaining the same sealing performance. This contributes positively to the energy efficiency of modern products.
