Oil Seal Types

We can't emphasise enough how important it is to choose the right oil seal to keep your application functioning, and functioning well. Not every oil seal is the same. Manufactured using various material elastomers and to suit a range of dimensions, seals are as unique...

Rotary Shaft Seals

Rotary shaft seals are the more formal name for this type of seal; however, we also know them as oil, grease, fluid, or dirt seals. Whatever you call them however, they all perform the same function – to close the space between stationary and moving parts in machinery...

Viton O Rings

Viton o rings bring with them numerous advantages, especially for applications within high-tech and critical industries. Providing great resistance to wide fluctuations in temperature and chemical ranges as well as being wholly suitable for pressure applications,...

How are O Rings made?

O rings are one of the most common components within manufacturing. Suitable for a range of applications and found in numerous everyday appliances, o rings are a vital piece of equipment to provide the perfect sealing solution. Ring-shaped seals, o rings are made up...

Pipe Gasket

A pipe gasket is designed to seal a space between two sections of a pipe. Many pipes have flanged surfaces where they join, which means it isn’t smooth or flat to make this connection secure. In order to overcome this flared area, a flange gasket will be used to...

Spiral Wound Graphite Fill Gasket

With so many different gasket options on offer today, we know it can be difficult deciding which ones have the right features for your needs. Each type of gasket is suitable for a variety of applications or uses, and the material that your gasket is made from will...

Gasket Cutting

Using the latest technology and equipment, gasket cutting today offers incredible precision. Achieving customised gaskets that meet your sealing requirements, today we’re now seeing various gasket cutting techniques used as we move away from the standard dimensions...

What are Bonded Seals?

As you start to compare the seals on offer on our site, you’ll find that there are many different options for a variety of uses. Bonded seals are a great solution for some applications, offering many benefits over other types of seals. Specialist Sealing Products...

Rubber Gasket Material

Rubber gaskets are a very valuable solution for a variety of uses, however, you’ll want to make sure you always choose the right option for your unique business operations. There are a variety of rubber gasket materials on offer, which provide you with an effective...

Installation of Spiral Wound Gaskets

Spiral wound gaskets are crucial in the prevention of leaks. Used across various industries, we know that spiral wound gaskets can provide the perfect sealing solution.  We also understand that your ultimate goal when working with gaskets is to ensure they fit...

See our latest catalogue for all the services we offer.

Silicone O Rings

As a leading O ring UK manufacturer and supplier of high quality seals and gaskets, offering a wide range of types, sizes, and sealing solutions that suit various applications across all industries, we work hard to ensure you get the best sealing solution for your application.

We want to make sure that all of our clients get a high-quality, compliant product that is durable, effective, and practical when it comes to cost and maintenance levels.

One of the most cost-effective and most popular o rings offering a whole host of benefits is that of silicone rubber o rings.

Known for their flexibility and low compression characteristics, silicone o rings are often the seal of choice for applications within the medical, aerospace, automotive, and electronics industries.

In this post, we take a look at some of the main benefits and what this particular type of o-ring can bring to your application.

Silicone O Rings Complete Guide

Silicone o rings UK

Silicone o rings are one of the most widely used types of sealing element due to their effective sealing capabilities and suitability to numerous industries; they’re also simple to use and offer good value for money.

Due to its flexible nature, silicone sealing is also considered the industry standard and the `go-to` o ring choice for many manufacturers.

Silicone compound materials, such as carbon, hydrogen, and oxygen, along with a silicone base polymer, are used to produce a range of general-purpose o rings, all providing good to average levels of strength (you will find various grades of o rings available; the grade you choose will be dependant on your exact requirements). Depending on requirements and specifications, these types of o-rings can also be formulated to include inert fillers.

With excellent weathering capabilities, resistance to ozone, acid, and heat, as well as being non-reactive, stable, and cost-effective to manufacture, silicone is a durable choice.

Benefits of silicone o rings

Wide temperature range

Silicone rubber o rings are an incredibly practical solution when applications are operating with various low and high-temperature ranges. Able to withstand and maintain their shape and performance, silicone o rings are an excellent choice for 99.9% of environments in which they are placed.

They can maintain their high performance in temperatures ranging from -75 degrees Celsius up to 230 degrees Celsius, with some newer polymers able to still operate in temperatures up to 315 degrees Celsius.

Excellent flexibility

Due to the elasticity of this type of o ring, even in the lowest of temperature ranges, silicone o rings keep their flexibility, providing you with peace of mind that they will always perform at their best.

Silicone o rings also maintain their flexibility and composure when exposed to certain chemicals, i.e., alkali and acid elements.


When silicone o rings are stored correctly (in clean and dry spaces away from direct sunlight and UV rays), they can last boundless years. This is important to bear in mind as the silicone counterpart Nitrile o rings may only have a lifespan of 15 years.

Reducing ongoing maintenance requirements and the need for replacement.

Low compression set

Silicone o rings can still perform at high pressures and temperatures due to the makeup of their material.

Available in a choice of colour

This may not be a big selling point; however, for some applications, having this choice is required, especially for consumer-facing applications.

Available from o ring suppliers in red, green, blue, and clear, no matter the colour you choose, the strength of the material is not compromised; you can simply choose the one that is best suited to your application.


For all we have mentioned, the advantages of using silicone o rings, this material choice does come with some weaknesses, which you should be aware of.

For example, this type of o ring has poor tensile strength and low shear strength. It isn’t resistant to abrasion, and also has low impermeability.

This makes silicone o rings unsuitable for applications that involve steam or oil.

O Ring Supplier UK

Silicone o rings can provide you with a tremendous general-purpose sealing option, with this type of o ring particularly suited to internal sealing applications.

At SSP, we’re always on hand to help you with the most suitable o-ring type for your application, and as well as a range of grades of silicone o-rings, we also stock PTFE, Nitrile, and Fluorocarbon as viable alternatives.

All of our seals and gaskets are compliant with relevant industry standards and guidelines. If you’re looking for a general-purpose sealant for your application, contact us today at 01535 274 776 or email the requirements of your application to, and we’ll make sure to come back to you with the best solutions.



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