Features: Engineered for a fit with 711 4030B Spa hot tubs, these 5 pack gaskets ensures seamless installation and leak prevention using precisions molded silicone construction. Crafted from heat resistant silicone, these replacement gaskets withstand prolonged high temperature exposure while maintaining flexibility and durability for extended service life. Ideal for homeowners and commercial spa facilities requiring routine maintenance parts to restores hot tubs functionality without professional assistance. Designed for quick replacement during regular equipment upkeep, these spa bath seals maintain optimal water temperature and pressure in residential or commercial hydrotherapy systems. The compatibility profile allows these hot tubs gaskets to serve multiple spa models beyond 711 4030BO, featuring a compression optimized design that preserves energy efficiency through watertight seal performances. Specifications: Component: Silicone Diameter: Approx. 2.87inch(7.3cm) Package Includes: 5PCS Spa Hot Bath Gasket note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.