Seal fasteners have been used for over 50 years. Originally designed for the military to protect sensitive electronics, their use has grown to include thousands of commercial applications because sealing fasteners are easy to install, reusable and maintain the desired pressure environment while sealing up gases, liquids and other environmental hazards.
ZāGO Sealing screws and nuts are grooved to support an o-ring sealing element. The groove under the head of the fastener provides a cavity for the o-ring to expand into. As the fastener is tightened, the o-ring cross section expands and re-shapes itself outward to the edge of the groove and inward to the threads which allows the surfaces to achieve full metal-to-metal contact. The cavity prevents the o-ring from being crushed (unlike washers) protecting the seal from breaking and avoiding leakage and equipment failure.
Unlike ordinary fasteners which merely hold parts together, ZāGO’s fasteners also seal the parts. ZāGO seal fasteners fit standard and metric as well as thread forming applications. They allow you to form a tight seal without the risk of over-tightening.
Designing ZāGO Seal Fasteners into your product insures against product failure. The seal provided by ZāGO’s fasteners have a high static sealing effect suiting a wide range of clearances, increasing the overall performance and working life of the machine.
Seal fasteners are like static shock absorbers minimizing the effect of vibration and thereby reducing the harsh effect that constant movement can have on machinery. By simply lowering the durometer (hardness) of the rubber o-ring, the proper damper effect can be achieved.
ZāGO offers a wide range of sealing fasteners to accommodate all client requests. The fasteners are available in a wide range of metals while the o-rings are available in a comprehensive range of materials that will serve well for any application in any environment.