The oval metal serrated gasket is designed to work with bolts that have holes at the end of the shank, and a spring washer is placed under the nut to prevent the nut from loosening. This allows an opening pin to be inserted into the hole in the shank from the groove in the nut, preventing the nut from loosening automatically. It is mainly used in situations with shock loads or alternating loads. Spring washers are widely used in load-bearing and non-load-bearing structures of general machinery products.

The oval metal ring gasket is characterized by its low cost and ease of installation, making it suitable for locations that require frequent assembly and disassembly. However, the clamping force of spring washers is relatively low. The primary role of oval gaskets when used with screws and bolts is to provide clamping force. The fundamental role of spring washers is to provide strength after tightening the bolts.

They increase the clamping force between the screws, bolts, and materials. The metal ring gasket tightens the materials during vibrations, preventing the screws and bolts from loosening from the materials.

In simple terms, the effect of the oval metal ring gasket spring washer is to serve as a protective spring washer. Another effect is that the three-component assembly consists of screws and bolts, which are also used with flat washers. Combination screws with spring washers, such as alloy steel non-standard gaskets, are commonly used in the market. More and more people prefer to use this combination with spring washers.

Regarding Semi-Metallic Gaskets

The reason why the sealing body of semi-metallic gaskets (combination of metal and non-metal gaskets) is thinner than the inner and outer rings:

Semi-metallic gaskets are generally composed of an inner ring, a locating ring, and a sealing body (such as metal spiral wound gaskets and serrated combination gaskets). During use, the sealing body undergoes compressive deformation to fill the rough surfaces on both sides of the flange and achieve sealing. In this process, the inner ring generally serves to prevent corrosion and prevent the substances in the pipeline from directly contacting the sealing body or reduce the contact between the substances and the sealing body. The locating ring prevents the sealing body from bursting or being excessively compressed due to extrusion, and also allows the outer side of the gasket to closely fit with the bolt holes, serving as a centering guide for installation.