The 1" FTHD + O-Ring UltraZone Irrigation Cap is a specialized fitting designed to securely seal the end of irrigation lines or hoses. This cap features a female threaded connection (FTHD) combined with an O-ring to ensure a leak-free seal, making it an essential component in preventing water loss. Made from durable PVC, this cap is easy to install and remove, providing versatility for various applications. It's ideal for use in irrigation systems to terminate lines, as well as in gardening, landscaping, and pool systems to seal off unused hoses or lines, ensuring efficient water management.