Monument 4in.100mm X ½in. Nylon Drain Testing Plug - MON1378Z

Q: I'm planning on using this as a bath plug to stop water coming up my bath. Will it work for that purpose?

No it is too big for a normal bath plug. It is 4 inches in diameter and generally used to plug up underground sewage type pipes. If you are using it for this purpose do not over tighten as being plastic you can pull it apart.

Product ID: 56776560

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💨Air-tight seal up to 29psi

🔧Removable top caps & rubber rings

🛠️100mm diameter fit

Frequently Bought Together

Monument 4in.100mm X ½in. Nylon Drain Testing Plug - MON1378Z

Monument 3in. 75mm X ½in. Nylon Drain Plug - MON1377W

Monument MON1376 Drain Test Plug 50mm (2in)

Description

🚰 Seal the deal with confidence — test like a pro!

TRUSTED LEGACY BRAND - Backed by Monument’s 75+ years of plumbing industry excellence.
USER FRIENDLY DESIGN - Removable top caps and rubber rings for quick installation and maintenance.
PRESSURE RESISTANT SEAL - Handles back pressure up to 29psi (1.97bar) for reliable testing.
DURABLE NYLON CONSTRUCTION - Robust nylon plates and stem ensure long-lasting performance on the job.
PRECISION FIT FOR 92 107 MM PIPES - Seamlessly blocks drains with a perfect 100mm diameter range.

The Monument 4in (100mm) Nylon Drain Testing Plug is engineered for precise drain pipe blocking and air testing. Featuring a durable nylon build, removable top caps, and rubber rings, it reliably seals pipes within a 92-107mm diameter range and withstands back pressure up to 29psi (1.97bar). Ideal for professional plumbers seeking trusted, efficient drain testing solutions.

Specifications

Manufacturer	Monument
Part Number	MON1378
Product Dimensions	8.51 x 9.5 x 9.5 cm; 120 g
Item model number	MON1378
Size	100 mm
Colour	Multi-coloured
Material	Rubber
Power Source	AC
Item Package Quantity	1
Included Components	1378Z Drain Testing Plug 100mm (4in)
Batteries included?	No
Batteries Required?	No
Item Weight	120 g

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I'm planning on using this as a bath plug to stop water coming up my bath. Will it work for that purpose?

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