The unique C-type pressure-sensitive gasket design has been the core of groove systems since its inception. According to the composite elasticity and original trumpet design, the sealing gasket forms a seal at the "A" size position on the outer diameter of the pipeline. This design allows for significant pipeline displacement when sealed under pressure and vacuum. During installation, with the natural compression of the corner lip edge and the elasticity of the entire sealing ring body, the sealing ring protrudes slightly from the pipe end. It is important to apply lubricant to the lip and outer ring back before assembling the groove joint sealing ring. For more details, please refer to the specific product submission and installation instructions, channel outer diameter sealing. When the joint body is engaged with the sealing ring, the joint body is aligned with the sealing ring and tightly fitted on the back of the sealing ring, and the sealing ring is completely embedded in the keel of the ductile iron joint. With the help of a sturdy bolt seat, the compression force is increased but not fully compacted, retaining natural elasticity and serving as a sealing force in the joint. The sealing ring is fully embedded in the joint to prevent rubber from being squeezed out under high pressure. The last factor that affects sealing is pipeline pressure (or vacuum). Pressure will seal the lip, bringing it closer to the outer diameter of the pipeline.