Ensures a watertight seal and perfect for pool lights with this silicone gasket set containing resistant screws and IP68 component for leakproof underwater Made from rubber resistant to chlorine, UV rays, and temperature ( 20°C to 60°C), the 21.2cm gasket maintains flexibility through 1, 000+ hours of accelerated aging tests Ideal for pool owners, maintenance technicians, and spa facility managers requiring replacements for 79101600Z / 79104800 underwater lighting systems This complete pool light seal replacement set outperforms standard rubber gaskets with superior resistance and extended service life, ensuring years of easy operations Designed for seamless installation in residential pools, commercial centers, and therapeutic spa environments where consistent underwater illuminations is critical