Plastic Blanking Hose Bung

3D Printed ABS Plastic Thick Walled

PBP019K-ASH

£6.49

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Address

Silicone Hose UK

HolmeBank Business Park, Station Road
Unit 5
Mirfield WF14 8NA
United Kingdom

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Opening hours

Monday	07:00 – 19:00
Tuesday	07:00 – 19:00
Wednesday	07:00 – 18:00
Thursday	07:00 – 18:00
Friday	07:00 – 17:00
Saturday	07:00 – 13:00
Sunday	Closed

Bank holidays may affect our opening hours and delivery times.

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Plastic Blanking Hose Bung is a simple and durable fitting designed to securely seal the open ends of hoses and pipework in a wide range of applications. Manufactured from high-quality Acrylonitrile Butadiene Styrene (ABS), the bung provides excellent resistance to impact, ageing, and environmental wear. Its barbed profile ensures a tight and secure grip inside the hose, preventing leaks or contamination ingress without the need for adhesives. Lightweight yet robust, the bung is easy to install and remove, making it an ideal choice for temporary sealing, testing, or isolating unused hose lines.

Key Features:

Material: Acrylonitrile Butadiene Styrene (ABS) for strength, impact resistance, and durability.
Design: Barbed bung for sealing open hose ends securely.
Surface Finish: Smooth 3D-printed finish for professional appearance.
Operating Temperature: -20°C to +105°C for versatile use.
Applications: Ideal for sealing hoses in garden, pond, automotive, and general fluid transfer systems.

The barbed profile ensures excellent retention inside the hose, resisting pressure and vibration while maintaining a reliable seal. ABS construction offers long-lasting resistance to cracking, UV exposure, and moisture, making the bung suitable for both indoor and outdoor use. Compact and easy to handle, it provides a quick and effective solution for isolating hoses during system maintenance, storage, or when extensions are no longer required.

Applications include sealing garden irrigation hoses, pond pipework, water transfer systems, automotive fluid lines, and general-purpose hose connections. Plastic Blanking Hose Bungs are widely used by installers, mechanics, and DIY users as a cost-effective and reusable solution for securely blanking hose ends.

Size Guide

Internal Diametermm
8
11
13
16
19
22
25
28
30
32
35
38
45
48
51
54
57
60
63
68
70
76
80
90
102

Measurements are nominal and may vary slightly.

How to measure ID

Measure the bore you are sealing

A bung plugs into the hose, so the size you need is the hose's internal diameter — not its outside, and not the pipe it sits on.

Use the inner jaws of your calipers

Open them inside the cut end of the hose. A cut end is often slightly oval, so take two or three readings and work from the smaller figure.

Or take it from the hose's own listing

If the hose came from this site, its internal diameter is in its own Size Guide — quicker than measuring, and exact.

Match the listed size exactly

The barb is moulded to the size shown and ABS has no give in it. A bung one size out will either refuse to enter or sit loose — so pick the figure that matches your bore, not the nearest.

These are listed by the bore they seal. The figure on this page is the internal diameter of the hose the bung plugs into — not the size of the bung's own body. Measure the hose, order that size.

Construction

Material

Acrylonitrile Butadiene Styrene (ABS)

Strength, impact resistance, and durability

Design

Barbed bung

Sealing open hose ends securely

Finish

Smooth 3D-printed finish

Professional appearance · -20°C to +105°C for versatile use

Plastic Blanking Hose Bung

3D Printed ABS Plastic Thick Walled

Frequently Asked Questions.

Answers to the questions we’re asked most about sizing, fitment and performance.

Still can't find your answer?

What are blanking bungs used for?

Sealing a pipe, tube or port you are not using - blanking a redundant takeoff after an engine swap or component delete, or capping open pipe ends during storage, transport, painting or blasting so nothing gets inside.

What are they made from?

3D printed ABS plastic - tough, reusable and dimensionally consistent. Being printed to order means we can cover a wider range of sizes and colours than injection moulding would justify, and an unusual size is often possible if you ask.

How do I size one?

Measure the internal diameter of the pipe or port you are plugging, or the outside diameter if the bung fits over rather than into it. It should be a firm interference fit that needs some effort, not something that drops in loosely. Available in internal diameters from 8mm to 102mm, in black, white, blue and red.

Can I use them on pressurised ports?

They are best suited to low or zero pressure blanking and protection. For a pressurised coolant or boost port, use a reinforced silicone blanking cap, which is rated 5 to 12 bar and made for that duty.

Solid or hollow - what is the difference?

Solid bungs seal a port completely. Hollow bungs plug the opening while leaving a passage through, which suits reducing or restricting an opening rather than closing it, or letting a smaller line pass through a larger port.

Do I need a clip as well?

On a zero-pressure port, usually not - the interference fit is enough. On anything with pressure or vibration, fit a clip over the joint. If the bung is inside the pipe there is nothing to clamp against, in which case a silicone cap over the outside is the better approach.