The LPC 3″ R20 Grooved Pipe Coupling Gasket Sealing Ring is a high-quality product made in the United States by LPC. This unit includes 4 sealing rings designed to fit a 3″ pipe coupling. The grooved design ensures a secure seal for hydraulic, pneumatic, pump, and plumbing applications. With the model number R20, this gasket sealing ring is a reliable choice for various industrial and commercial use cases.