Description
Overview:
The Square Headed Plug 1.1/2" BSP is a heavy-duty threaded plug designed to seal unused pipe outlets and ports in plumbing and general services. Made from durable malleable iron, it withstands everyday knocks and tightening forces while maintaining a secure seal. The square head allows positive engagement with a spanner for quick fitting and removal, even in confined spaces. Sized for 1-1/2 inch BSP female threads (approx. 38.1 mm nominal), it is suitable for water, air, and other non-corrosive media in domestic and commercial systems, plant room pipework, and workshop services. Use it to blank off tees, elbows, valves, and equipment ports to prevent leaks and maintain system integrity. Identified by MPN 888 112 for straightforward selection and reordering.
Key Features:
- Malleable iron construction for high strength and long service life
- Square head for easy tightening with an adjustable spanner or socket
- 1-1/2" BSP male thread (approx. 38.1 mm nominal) suits BSP female fittings
- Provides a tight, reliable seal when used with PTFE tape or suitable thread sealant
- Effective for temporary or permanent blanking of pipe ends and service ports
- Supports isolation during testing, commissioning, and maintenance tasks
- Robust build tolerates vibration and routine handling on site
- Clean, well-formed threads for consistent engagement and reduced risk of damage
- Suitable across domestic and commercial installations where BSP fittings are used
- MPN 888 112 for easy identification in stores and service records
Typical Applications:
Blanking off unused outlets on manifolds, pumps, and valves; sealing branch connections on tees and elbows; capping test points on water and air lines; closing drain or inspection ports on tanks and equipment; isolating sections of pipework during repair or pressure testing in residential, commercial, and light industrial settings.
Also known as:
Pipe cap, end plug, pipe stopper, blanking plug, BSP plug, square head stop plug, threaded bung, test plug, BSP screw-in cap, service port bung.
Product Specifications
| L&S Part No. | 888 112 |
|---|---|
| Unit of Sale | 1 |
| Key Features | - Malleable iron for high strength and durability - Square head allows easy spanner engagement - 1-1/2" BSP male thread fits BSP female fittings - Provides reliable seal with PTFE tape - Suitable for domestic and commercial BSP systems |


