40mm straight expansion plug rubber stainless steel bung pipe seal leak repair
Use this expansion plug to close off pipes for winter or for water testing, leak identifying or pressure testing.  
Suitable to plug pool returns, skimmers, general pipes, returns and cleaner lines.  
Used correctly the plugs will prevent water from entering pipes.
Also perfect for blocking pipes when repairs needed or to stop water flow for other purposes.
Made from quality rubber with strong, salt & chemical resistant stainless steel wing nuts and caps this expansion plug will provide great sealing ability.
Size ? 40mm expansion plug