The 1" FS SQ HD PLUG by Capitol Manufacturing is a high-quality square head plug designed for sealing pipe ends in various fluid systems. This fitting features a female socket connection, ensuring a secure and leak-proof seal. Constructed from durable materials, it is built to withstand pressure and environmental conditions, making it ideal for both indoor and outdoor applications. Its compact design allows for easy installation, while compliance with industry standards guarantees reliability and safety. Perfect for plumbing, HVAC, and industrial applications.