Rubber Wire Reinforced Radiator Hose

High-Pressure Steel Wire Helix Wrapped Finish

RWR013-ASH#1

£7.78

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Silicone Hose UK

HolmeBank Business Park, Station Road
Unit 5
Mirfield WF14 8NA
Vereinigtes Königreich

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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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Rubber Wire Reinforced Hose is a heavy-duty suction and delivery hose designed for demanding industrial, agricultural, and commercial fluid handling applications. Constructed with a smooth black synthetic SBR rubber inner tube, reinforced with two-ply fabric cords and a high-strength embedded steel wire spiral, and finished with a smooth SBR rubber outer cover, the hose offers excellent durability, crush resistance, and flexibility. Conforming to SAE J20R3 standards, it provides reliable performance in both suction and pressure service. With an operating temperature range from -20°C to +80°C (short-term peaks up to +85°C), Rubber Wire Reinforced Hose is suitable for water, slurry, light chemicals, and general fluid transfer in tough environments.

Key Features:

Inner Layer: Black smooth synthetic SBR rubber for strength and fluid compatibility.
Reinforcement: Two-ply fabric cords with embedded steel wire spiral for suction and pressure stability.
Outer Layer: Black smooth synthetic SBR rubber for abrasion, weather, and ozone resistance.
Operating Temperature: -20°C to +80°C (peak +85°C).
Working Pressure: 10 bar across all sizes.
Burst Pressure: 30 bar (3:1 safety factor).
Internal Diameter Range: 13 mm to 51 mm.
Wall Thickness: 5 mm to 6 mm depending on size.
Bending Radius: 144 mm to 378 mm depending on diameter.
Standard: SAE J20R3 compliant.

The embedded steel wire helix provides superior structural integrity, preventing collapse under suction and maintaining dimensional stability under pressure. The fabric reinforcement adds strength without compromising flexibility, while the smooth bore supports efficient fluid transfer. The outer SBR rubber cover delivers excellent resistance to abrasion, ozone, and weathering, making the hose highly durable even in outdoor and heavy-duty working conditions. With a burst rating three times higher than its working pressure, it ensures a secure margin of safety for demanding operations.

Applications include suction and discharge of water, light chemicals, slurry, and general industrial fluids, as well as agricultural irrigation and construction site pumping. Rubber Wire Reinforced Hose is a versatile and reliable solution where flexibility, strength, and crush resistance are required in suction and delivery operations.

Specifications

Type: Wire Reinforced Hose
Colour: Black
Standard: SAEJ20R3
Working Pressure: 10bar
Bursting Pressure: 30bar
Coil Length: 20m

Size Guide

Inside Diametermm	Outside Diametermm	Wall Thicknessmm	Bending Radiusmm	Coil Weightkg
13	24	5.5	144	9.6
16	27	5.5	162	11.1
19	30	5.5	180	12.7
22	33	5.5	198	14.2
25	36	5.5	216	15.8
28	38	5	228	17.4
32	42	5	252	19.4
35	45	5	270	21
38	48	5	288	22.5
45	57	6	342	26.2
51	63	6	378	29.3

Measurements are nominal and may vary slightly.

How to measure ID

1

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.

2

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.

3

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.

4

Round to the nearest listed bore

Never go up: a bore wider than the fitting will not grip, whatever the hose is made of. If you land between listed sizes take the smaller bore, and secure it with a clip.

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

Black smooth synthetic SBR rubber

Abrasion, weather, and ozone resistance

2 · Reinforcement

Two-ply fabric cords with embedded steel wire spiral

Suction and pressure stability · 10 bar across all sizes · 30 bar (3:1 safety factor)

3 · Inner liner

Black smooth synthetic SBR rubber

Strength and fluid compatibility · -20°C to +80°C (peak +85°C)

Conforms to SAE J20R3.

11 bore sizes13mm to 51mm internal diameter

30 bar burst10 bar working on the smallest bore

SAE J20 R3 built to standardthe automotive coolant hose standard

Rubber, done right. EPDM throughout.

Coolant-rated rubber for the jobs that do not need silicone money.

INTERNAL DIAMETERS

13mm to 51mm

RATED

−20°C to +80°C

WORKING PRESSURE

10 bar across all sizes

BUILT TO

SAE J20 R3

SOLD BY

The metre

Specification at a glance

Across the whole 13mm–51mm range.

13mm –51mm Inside diameter

24mm –63mm Outside diameter

5mm –6mm Wall thickness

144mm –378mm Bending radius

10bar Working pressure

30bar Bursting pressure

Inside diameter (mm)	Outside diameter (mm)	Wall thickness (mm)	Working pressure (bar)	Bursting pressure (bar)	Bending radius (mm)	Coil weight (kg)	Coil length (m)
13	24	5.5	10	30	144	9.6	20
16	27	5.5	10	30	162	11.1	20
19	30	5.5	10	30	180	12.7	20
22	33	5.5	10	30	198	14.2	20
25	36	5.5	10	30	216	15.8	20
28	38	5	10	30	228	17.4	20
32	42	5	10	30	252	19.4	20
35	45	5	10	30	270	21	20
38	48	5	10	30	288	22.5	20
45	57	6	10	30	342	26.2	20
51	63	6	10	30	378	29.3	20

Show all 11 sizes → Show fewer

How it's built

Three layers, each doing one job.

Three layers, from the outside in: black smooth synthetic SBR rubber, two-ply fabric cords with embedded steel wire spiral and black smooth synthetic SBR rubber. Each one is doing a different job.

1

Outer cover

Black smooth synthetic SBR rubber

Abrasion, weather, and ozone resistance

2

Reinforcement

Two-ply fabric cords with embedded steel wire spiral

Suction and pressure stability10 bar across all sizes30 bar (3:1 safety factor)

3

Inner liner

Black smooth synthetic SBR rubber

Strength and fluid compatibility-20°C to +80°C (peak +85°C)

Product gallery

Frequently Asked Questions.

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

Still can't find your answer?

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What is it used for?

Coolant transfer in automotive, marine, agricultural and industrial engines - a smooth internal bore for efficient flow with a reinforced wall.

What size and length do I order?

Order by internal diameter, matched to the outside diameter of the pipe stub or spigot 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 13mm to 51mm, lengths from 1 Metre to 20 Metres (Full Coil). Full coils work out considerably better value per metre than cut lengths.

What standard is it built to?

It is manufactured to SAE J20 R3. Buying to a recognised standard matters here - it means the construction, pressure rating and performance have been benchmarked rather than simply described.

Can I use it for fuel or oil?

No - EPDM and general-purpose rubber have poor resistance to hydrocarbons and will soften, swell and eventually fail. For fuel and oil use our SAE J30 R6 rubber hose or a fluorosilicone-lined silicone hose.

How do I know when it needs replacing?

Squeeze it. Hard and brittle, or spongy and swollen, both mean it is done. Look for surface cracking when you flex it and crusty residue or staining round the clips, which indicates seepage. Replace on condition rather than waiting for a failure.

How should it be secured?

Proper hose clips, one at each end, positioned squarely over the barb or spigot. Support long runs with rubber-lined P-clips so the hose cannot chafe against a bracket, panel or wiring loom, and keep it clear of exhaust components.