What Are Rubber Extrusions? A Complete Guide for Industrial Applications

Rubber extrusions are one of the most versatile and widely used components in modern manufacturing and construction. Despite often being unseen, they play a critical role in sealing, protecting, insulating, and cushioning across a wide range of industries.

In this guide, we explain what rubber extrusions are, how they are made, and where they are most commonly used.

What Is a Rubber Extrusion?

A rubber extrusion is a continuous length of rubber profile created by forcing an uncured elastomer compound through a shaped die. Once the profile exits the die, it is cured using heat or microwave vulcanisation to lock in its final shape and performance properties.

Unlike moulded rubber parts, extrusions are produced in continuous lengths and then cut or finished to suit the application.

Common Applications of Rubber Extrusions

Rubber extrusions are used wherever sealing, protection, or flexibility is required, including:

• Door and window seals

• Industrial machinery guards

• Automotive and transport seals

• Marine hatches and enclosures

• Construction expansion joints

• HVAC systems

Their ability to conform to irregular surfaces makes them ideal for both static and dynamic sealing applications.

Materials Used in Rubber Extrusion

Different elastomers are used depending on environmental and performance requirements:

• EPDM – Excellent weather, UV, and ozone resistance

• Silicone – High-temperature stability and food-grade suitability

• Neoprene – Balanced resistance to weathering and chemicals

• Nitrile (NBR) – Oil and fuel resistance

Selecting the correct material is essential to achieving long service life.

Why Choose a Specialist Rubber Extrusion Manufacturer?

Working with an experienced UK manufacturer ensures:

• Consistent dimensional tolerances

• Correct material specification

• Reliable lead times

• Technical support from design to delivery

Seal Extrusions supplies both standard and custom rubber extrusion solutions for demanding industrial environments.