This sealing ring kit includes 120 or 100 pieces of combined seal washers made from metal and rubber materials.The bonded construction features a rubber inner layer surrounded by a metal outer ring, providing sealing performance for various plumbing and drainage applications.These gaskets are designed to fit drain screws and are suitable for use in environments requiring resistance to oil and varying temperatures.The combined seal washers offer compatibility with multiple threaded connections and can be used in plumbing fixtures, machinery, and where secure sealing is needed.The set provides a practical selection of sizes and types for maintenance and repair tasks.Disclaimer: This aftermarket part is not affiliated with the manufacturer.Mentioned brands/models are for compatibility identification only.