Silicone Vacuum Hose

Thin Walled High Temp Flexible

SVH003B-ASH#1

£1.49

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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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Silicone Vacuum Hose (VMQ) delivers stable, heat‑resistant performance for vacuum, breather and signal lines across automotive, pneumatic and general industrial applications. Manufactured from VMQ silicone rubber with an inner and outer silicone layer and no reinforcement, this flexible vacuum tubing maintains elasticity and dimensional stability from -60°C to +180°C with short peaks to +200°C. As a polyester‑free, non‑reinforced silicone vacuum tube designed to SAE J20 R3 requirements, the product suits under‑bonnet vacuum routing, boost control reference lines, emissions management, laboratory set‑ups and light‑duty fluid transfer where minimal pressure is present. Available in compact sizes from 2 mm to 10 mm internal diameter with wall options typically 1–3 mm, silicone vacuum line tubing bends easily around tight radii for clean installations while resisting hardening and cracking over time. Supplied in economical 30 m coils for production use, VMQ silicone vacuum hose supports reliable medium‑temperature service, ozone and weathering resistance, and fast assembly in maintenance environments. Alternative descriptions: silicone vacuum tubing, VMQ silicone vacuum line, SAE J20 R3 silicone tube, non‑reinforced silicone pneumatic tubing.

Key Features:

Material: VMQ silicone inner and outer layers (non‑reinforced).
Standard: SAE J20 R3 compliance for non‑reinforced silicone tubing.
Operating Temperature: -60°C to +180°C (short peaks to +200°C).
Internal Diameter Range: 2 mm to 10 mm (size‑dependent wall 1–3 mm).
Reinforcement: None — designed specifically for vacuum and low‑pressure signal lines.
Working/Burst Pressure: Not rated for positive pressure; vacuum service only.
Supply Format: 30 m coils for efficient workshop and production use.

Built entirely from VMQ silicone rubber, silicone vacuum tubing combines thermal stability with excellent flexibility for dependable routing in compact assemblies. The non‑reinforced construction minimises weight and allows tight bend radii without kinking in correctly sized runs, making the tubing ideal for manifold vacuum, boost reference, bypass control and other pneumatic signal duties. VMQ’s inherent resistance to heat, ozone and weathering supports long service life in engine bays and industrial environments, while the broad temperature window from -60°C to +180°C (with short peaks to +200°C) safeguards performance during cold starts and high‑load operation. As SAE J20 R3 silicone vacuum line, the tubing suits light fluid transfer where system vacuum or minimal differential pressure is present, helping maintain stable readings in sensors and actuators used across industrial applications. Smooth, compliant silicone walls make installation fast and reduce clamp stress, supporting durability and reduced maintenance in continuous‑use settings.

Typical uses for silicone vacuum hose include automotive vacuum routing, boost and MAP sensor references, EGR and emissions control lines, and pneumatic control signals in manufacturing and maintenance environments. In wider industrial fluid handling, polyester‑reinforced options carry pressure, but non‑reinforced VMQ silicone vacuum tubing addresses medium‑temperature, low‑pressure service where flexibility and heat resistance are critical. Applications span workshops, test labs, light chemical sampling (compatibility‑checked), equipment ventilation, appliance servicing, and agricultural machinery for vacuum actuation. Suitable keywords: medium‑pressure hose (selection context), polyester reinforced PVC tubing (alternative category for pressure tasks), industrial fluid handling, pneumatic control, vacuum line silicone tubing, VMQ silicone hose.

Specifications

Standard: SAEJ20R3
Working Pressure: 0bar
Bursting Pressure: 0bar
Coil Length: 30m

Size Guide

Inside Diametermm	Outside Diametermm	Wall Thicknessmm	Coil Weightkg
2	6	2	0.78
2	7	2.5	0.8
3	5	1	0.82
3	6	1.5	0.83
3	7	2	0.84
4	6	1	0.86
4	7	1.5	0.88
4	8	2	0.9
5	7	1	0.92
5	8	1.5	0.94
5	9	2	0.98
5	10	2.5	1.02
6	8	1	1.03
6	9	2	1.04
6	10	2	1.06
6	11	2.5	1.08
7	10	1.5	1.2
7	11	2	1.45
7	12	2.5	1.68
8	11	1.5	1.85
8	12	2	1.99
8	14	3	2.19
10	16	3	3.36

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

Material

VMQ silicone inner and outer layers (non‑reinforced)

Reinforcement

None — designed specifically

Vacuum and low‑pressure signal lines · -60°C to +180°C (short peaks to +200°C)

Conforms to SAE J20 R3 for non‑reinforced silicone tubing.

Silicone Vacuum Hose

Thin Walled High Temp Flexible

Small bore. Serious range.

Non-reinforced silicone for vacuum and low-pressure signal lines.

INTERNAL DIAMETERS

2mm to 10mm

RATED

−60°C to +180°C

BUILT TO

SAE J20 R3

SOLD BY

The metre

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 3mm x 7mm to 10mm X 16mm, lengths from 1 Metre to 30 Metres (Full Coil), in blue, red, black and clear.

What is it rated for?

Continuous service from -50C to +250C, built to SAE J20 R3. Working pressure runs from 0 bar on the smallest bore down to 0 bar on the largest, with burst pressure from 0 bar down to 0 bar across the 2mm to 10mm 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.

Will it collapse under vacuum?

For normal manifold vacuum and signal-line duty in these sizes, no - the wall thickness is chosen to hold its shape. It is unreinforced though, so do not use it on the suction side of a pump or under strong sustained vacuum. For that you need a hose with a wire helix.

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?

blue, red, black and clear. 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.