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Silicone Tubing
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Silicone Products

Silicone Tubing

ID 1mm~50mm · -60~230°C · Flexible & Chemically Inert

Silicone tubing is extruded from silicone rubber: flexible, transparent and chemically inert, staying soft from -60°C to 230°C without hardening. Inner diameters from 1mm to 50mm with uniform wall thickness mate well with glass tubes and metal fittings — a general-purpose connector for laboratory gas, liquid and vacuum lines.

1 – 50 mmID
1 – 3 mmWall
Micro gas lines, dosing / Cooling water, gas lines …Typical Use

Specifications are subject to confirmation with your enquiry.

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Silicone Rubber -60~230°C 1~50mm Flexible & Clear Chemically Inert

📐 Highlights:
Silicone rubber · ID 1~50mm · flexible over wide range · low extractables

  • Material — Silicone rubber (VMQ)
  • ID — 1 / 2 / 3 / 4 / 5 / 6 / 8 / 10 / 12 / 15 / 20 / 25 / 32 / 38 / 50 mm
  • Wall — 1~3 mm (per size)
  • Temperature — -60°C to 230°C
  • Character — Flexible, clear, kink resistant
  • Use — Gas, liquid and vacuum connections
We will follow up on your inquiry as soon as possible. Custom sizes supported Samples available
Specifications

Specifications

Common inner diameters are listed below. Dimensions are indicative for selection only.

Request custom specs

Silicone Tubing

ID (mm)Wall (mm)Typical Use
1~31Micro gas lines, dosing
4~61~1.5Cooling water, gas lines
8~121.5~2Filtration, vacuum
15~202~2.5Liquid transfer
25~382.5~3High-flow liquids, drainage
503Large-bore connections
Wall thickness sets pressure and kink resistance; choose thick walls for vacuum duty.
📌 Customization:
• Custom ID and wall on request
• Color-coded tubing available
• Supplied in rolls or cut lengths

Product Description

1. Overview

Silicone tubing is the general connector for laboratory lines. Silicone chains stay flexible in the cold and stable in heat, resisting cracking under repeated flexing — a routine choice for gas transfer, liquid lines and vacuum systems.

The transparent wall lets you watch the fluid; the material is inert to most aqueous solutions and dilute acids and alkalis with low extractables. Smooth bores keep flow resistance low, and the elastic grip holds glass tubes firmly after insertion.

Silicone is more gas-permeable than FKM, so high-vacuum systems should account for leakage; strong organic solvents swell silicone over time — switch to FKM or PTFE tubing for such duty.

🔬 Types & Features:
Wide range — soft from -60 to 230°C, never sticky.
Transparent — fluid state at a glance.
Inert — low extractables, no media contamination.
Elastic grip — firm hold after push-fit.

2. Key Parameters

  • Material: silicone rubber (VMQ)
  • ID: 1~50 mm (multiple sizes)
  • Wall: 1~3 mm
  • Temperature: -60°C to 230°C
  • Appearance: transparent or translucent
  • Use: gas, liquid, vacuum lines

3. Material & Workmanship

Extruded from quality silicone rubber with uniform wall and smooth bores. ID, wall thickness and appearance are inspected per batch within standard tolerances.

Rinse the bore with warm water or dilute ethanol and dry before use; cut ends squarely with a sharp blade for flat sealing faces.

Applications

Typical Uses

Gas lines

generation and transfer connections

Vacuum systems

filter flasks and pump lines

Liquid transfer

cooling water and drainage

Apparatus links

flexible joints between glassware

Industries

  • Chemistry labs routine line connections
  • Pharma industry auxiliary process lines
  • Food testing liquid transfer in pretreatment
  • Teaching labs apparatus building

Selection Guide

Selection by Duty

DutySizeNote
Gas transfer4~8 mmMatches glass gas tubes
Filtration, vacuum8~12 mm thick wallKink resistant, seals well
Liquid transfer10~25 mmSmooth bore, low resistance
Drainage, high flow32~50 mmHigh throughput

Selection by Media

MediaMaterialNote
Aqueous, dilute acid/alkaliSiliconeInert and economical
Strong organic solventsFKM / PTFESilicone swells
Hot mediaSiliconeRated to 230°C

💡 Tips: Thick walls for vacuum — kink resistance matters.
Wet the glass tube end for easier push-fitting.
Strong solvents call for FKM or PTFE instead.

Operation & Maintenance

Operation Guide

Standard guide for silicone tubing.

03

Before Use

  • Check for cracks, tackiness and discoloration
  • Cut square ends to length
  • Match ID to the fitting OD
  • Rinse the bore and dry before use
04

Procedure

  1. Measure and cut to length
  2. Fitting OD 0.5~1mm larger than tube ID works best
  3. Wet and twist for easier insertion
  4. Insert at least 2cm deep
  5. Add clamps for pressure or vacuum duty
  6. Inspect regularly and replace aged tubing
05

Cleaning & Care

  • Rinse the bore after use to prevent residue
  • Coil loosely for storage; avoid tight kinks
  • Store away from sunlight and ozone
  • Replace tacky, hardened or cracked tubing

💡 Lab veteran tips: Wet first — insertion is easier and gentler.
Two centimeters deep — the minimum for leak-free grip.
Thick walls for vacuum.
Tacky or hard means replace.

Care & Notes

Show care & notes

⚠️ Safety Notes

Media compatibility

strong organic solvents swell silicone

Pressure

silicone tubing is not pressure-rated for high pressure

Vacuum

account for gas permeation in high-vacuum systems

Heat

above 230°C switch to PTFE tubing

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Need Silicone Tubing?

Contact our team for quotations and stock. Custom sizes and cut lengths supported.

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Silicone TubingID 1 – 50 mm Get a Quote