1 Metre SuperFlex Wire Reinforced Silicone

1 Metre Long Steel Wire Reinforced Flexible

Complete your setup

Add the right extras to get the job done.

Recommended Size Worm Drive Hose Clip

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Strong & reliable

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Recommended Size Mini Fuel Hose Clip

W4 Stainless Steel • 15mm>17mm • 1 Clip

Ideal for small bores
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Plastic Hose Clip Driver

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Speeds up fitting
Colour matched

£0.99

Plastic T-Bolt Driver

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For T-bolt clamps
Speeds up fitting

£0.99

Flexible Hose Clip Driver

Flexible shaft
Reaches awkward clips

£5.95

Rigid Hose Clip Driver

Rigid shaft
Direct access

£5.95

Silicone Reinforced Blanking Cap

6mm • Black

Reinforced silicone
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£10.58

Silicone Rubber Caps

6mm • Black

Seals unused ports
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SWR006K-ASH

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Delivery/Collection

Collect from Silicone Hose UK

Orders can be collected once you receive your ready-to-collect email.

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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Silicone Wire Reinforced Hose is a heavy-duty, flexible hose designed for demanding applications requiring strength, flexibility, and resistance to collapse under vacuum or bend stress. Constructed with a smooth extruded silicone compound inner layer, reinforced with polyester braids and an embedded steel wire helix, the hose provides excellent durability, pressure resistance, and kink prevention. The robust design ensures reliable performance in coolant, air, and fluid transfer systems across automotive, marine, and industrial environments. Operating between -50°C and +250°C, this multi-layered hose meets SAE J20 R3 standards, combining long service life with outstanding thermal and mechanical resilience. Supplied in 1-metre lengths and available in sizes from 6 mm to 35 mm internal diameter, the wire-reinforced silicone hose is suited to both pressure and vacuum applications.

Key Features:

Inner Layer: Smooth extruded silicone compound for flow efficiency and sealing.
Reinforcement: Polyester braids with integrated steel wire helix for anti-kink strength.
Outer Layer: High-grade silicone providing resistance to ozone, abrasion, and heat.
Construction: Multi-ply with embedded wire for vacuum and pressure stability.
Operating Temperature: -50°C to +250°C (peak +250°C).
Internal Diameter Range: 6 mm to 35 mm.
Working Pressure: Up to 10 bar (smaller sizes) and 8 bar (larger sizes).
Bursting Pressure: Up to 30 bar (approx. 3x working pressure).
Bending Radius: From 96 mm to 288 mm depending on bore size.
Length Supplied: 1-metre sections.
Standard: SAE J20 R3 compliant.

The silicone wire reinforced hose is engineered to provide both flexibility and robust performance in high-demand applications. The steel wire helix embedded within the multi-ply silicone structure prevents collapse under vacuum conditions, making it ideal for suction lines, while the polyester braid reinforcement stabilises the hose under working pressures up to 10 bar. The smooth bore design ensures efficient flow with minimal turbulence, while the silicone exterior protects against cracking, ozone,

Specifications

Type: 1 Metre Straight
Standard: SAEJ20R3
Wall Thickness: 5mm
Coil Length: 1m

Size Guide

Inside Diametermm	Outside Diametermm	Working Pressurebar	Bursting Pressurebar	Bending Radiusmm	Coil Weightkg
6	16	10	30	96	0.17
8	18	10	30	104	0.22
9.5	19.5	10	30	122	0.26
13	23	10	30	144	0.35
16	26	10	30	162	0.41
19	29	10	30	180	0.42
22	32	10	30	198	0.49
25	35	10	30	216	0.52
28	38	10	30	228	0.57
30	40	10	30	252	0.66
32	42	8	24	270	0.73
35	45	8	24	288	0.84

Measurements are nominal and may vary slightly.

How to measure ID

Measure the pipe, not the old hose

Heat and age make a used hose swell and go out of round. Take your reading across the metal outlet the hose slides onto — that measurement is your ID.

Use vernier calipers

Set the outer jaws across the widest point of the pipe. A tape measure round a curve reads low by a millimetre or two — enough to buy the wrong size.

Take three readings, keep the largest

Rotate 60° between each. If they disagree the pipe is oval; size to the biggest figure so the hose still seals.

Round to the nearest listed bore

Silicone stretches slightly. If you land between sizes, go down to the smaller bore for a tight seal — never up.

Order by ID, always. Every hose on this site is listed by internal diameter. OD is given for clearance only — it changes with wall thickness and ply count, so it is never the ordering size. On reducers, quote both ends, largest first.

Construction

1 · Outer cover

High-grade silicone

Resistance to ozone, abrasion, and heat

2 · Reinforcement

Polyester braids with integrated steel wire helix

Anti-kink strength · Up to 10 bar (smaller sizes) and 8 bar (larger sizes) · Up to 30 bar (approx. 3x working pressure)

3 · Inner liner

Smooth extruded silicone compound

Flow efficiency and sealing · -50°C to +250°C (peak +250°C)

Conforms to SAE J20 R3.

1 Metre SuperFlex Wire Reinforced Silicone

1 Metre Long Steel Wire Reinforced Flexible

Will not kink. Will not collapse.

A steel wire helix buried in the wall, for runs that have to bend hard.

INTERNAL DIAMETERS

6mm to 35mm

RATED

−50°C to +250°C

WORKING PRESSURE

Up to 10 bar

BUILT TO

SAE J20 R3

Frequently Asked Questions.

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

Still can't find your answer?

What size do I order?

Order by internal diameter, matched to the outside diameter of the pipe stub or joiner it slides over. Measure the pipe with vernier callipers rather than the old hose, which stretches in service and reads large. Available in internal diameters from 6mm to 51mm, in black, red and blue.

What is it rated for?

Continuous service from -50C to +250C, built to SAE J20 R3. Working pressure runs from 10 bar on the smallest bore down to 8 bar on the largest, with burst pressure from 30 bar down to 24 bar across the 6mm to 35mm range.

Can I use it for fuel or oil?

No - standard silicone swells and degrades in contact with petrol, diesel and oil, including the oil mist carried in a breather line. Use our Fuel & Oil silicone, which has a fluorosilicone liner built to SAE J30 R6.

What does the wire reinforcement do?

An embedded steel helix holds the bore open under vacuum and lets the hose bend more tightly without kinking. That makes it the right choice for the suction side of a pump, for long lower radiator hoses that collapse as the pump pulls, and for tight routing. Cut it between the coils, then cut the wire with side cutters and dress the end.

How do I cut it cleanly?

Use a sharp blade or a dedicated hose cutter and cut square in one decisive stroke. Never use a hacksaw - it drags the reinforcement plies and leaves a frayed edge that will not seal. If you have several cuts to make, a proper hose cutter pays for itself quickly.

What colours are available?

black, red and blue. Colour is cosmetic and makes no difference to the specification. If you are building a full system, order everything together - shades are consistent within a batch but can differ slightly between them.