Gaskets

Gaskets GasketsGaskets

We manufacture gaskets in a wide range of materials from EPDM for water applications to Gylon® for the pharmaceutical and chemical industries. Our manufacturing capabilities are extensive in our 11,000 square foot factory. We have 10 presses available ranging from 20 to 80 tonnes, and with over 15,000 cutting formes to choose from, many standard sizes and styles are available without incurring additional tooling costs. (We have practically all standard table cutters and a massive range of “True Bores”)

Working together with you to find the most suitable solution from our wide range of materials means you will get the correct material for the application. Sometimes cost is the overriding concern, but more often than not it’s the longevity of the seal. Fortunately, with over 45 years manufacturing experience, we are able to offer the most practical solution to your gasketing requirement.

Expert Advice

We are able to offer expert advice on pressures, temperatures and media compatibility, and  with our in-house moulding shop we are able to produce sheet for converting or finished gaskets in our massive polymer range including coloured FDA and EC1935 compliant grades, petrol and diesel resistant grades and specialist materials including metal detectable, conductive and anti-static grades. See our compounds page for details of our range of polymers.

In addition to traditional “flat” gaskets we also supply a complete range of eyelet and envelope gaskets for more aggressive environments.

CAD/CAM Cutting

For bespoke designs we now utilise 2 axis CNC cutters. These enable us to produce complex designs in a variety of materials without the need for sometimes expensive tooling, plus with the cut being done with a knife there are no laser scorch marks. You can e-mail your designs to us or we can input them directly from your drawings.

For thicker gauges we can cut using a 55000 psi water jet cutter. This allows us to cut up to 100mm without edge deformation, plus with the jet being only 1mm diameter there is very little wastage between cuts.

For large gaskets (Bigger than either roll or sheet size) we can supply them in pieces with dovetail joints pre-cut.

We offer gaskets in our full range of materials including:

See our materials section for all options

 

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GASKET MATERIALS

What are Gaskets and Seals?

There is much debate about whether a gasket and a seal refer to the same thing.

True, a gasket seals two mating flat faces of sometimes, imperfect components, such as pipe flanges in the water or Oil and gas industries, or perhaps a cylinder head in an automotive or marine engine; but one definition of seal is that “it closes something up, i.e. a gap between two surfaces, thus performing the same action as a gasket.” Gaskets and seals are commonly designed to be the weakest link, as they are designed to “fail” first if there is a problem caused by say, an unwanted increase in pressure.

In this scenario, the seal would fail and the engineers could shut down the machine and repair the fault.

Are gaskets and seals the same?

Well, technically their purpose is to stop liquids or gases escaping from two components, however there are many variations referred to, so whilst they can be the same, often they aren’t.

An example being, a sump gasket would be a “static seal”, made from a soft compressible material, such as cork or rubber to prevent oil leaking out from the gap between the engine and the sump, whereas a mechanical shaft seal is designed to stop the leakage of fluids or gases around a rotating shaft on a pump or compressor.

These would be made of a metal cartridge with a compressible inner. Therefore, these are referred to as “dynamic seals”.

How do I choose a Gasket?

The application needs careful consideration, as different materials have distinctive properties and varied chemical and temperature resistance.

The main criteria for choosing a gasket or seal is as follows: shape required, working temperature, pressure, and the media (chemicals/fluids/gases) that it will be coming into contact with.

Our website contains a wealth of information on the different materials and their properties to assist you choosing the correct type for your application, plus our experienced team are also here to assist.

What are the different types of Gaskets?

Most gaskets are produced from flat compressible sheet, whether that be rubber, cork, paper, plastic, CNAF (Compressed Non-Asbestos Fibre) and PTFE. If the application requires a non-flat gasket, i.e. it may require a lip, we will generally mould these from rubber or rubber & metal.

Some gaskets comprise of metal, like spiral wound gaskets, RTJ’s and heat-exchanger gaskets. These may have a softer filler which could be graphite or PTFE.

Practically any shape of gasket can be produced from flat sheet in a wide variety of thicknesses.

Where are Gaskets used?

Gaskets are used in a wide range of different areas. They are used for sealing flanges on pipelines in industries like the chemical industry.

They are used in power generation on pumps and compressors. Many gaskets find their way as simple washers in taps. A lot of FDA/EC1935 compliant gaskets are used to seal in the food and pharmaceutical industries, and in recent years we have seen an increase in demand for blue metal detectable seals, where a metal detector can pick up particles in the event of failure on production lines.

Metallic gaskets and ring type joints (RTJ’s) are semi metallic gaskets designed for use in high pressure environments such as the Petrochemical industry.