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RUBBER GASKETS & SEALS

RUBBER GASKETS & SEALS

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Rubber gaskets and seals are designed to compress under pressure to seal any gaps between the faces of two meeting surfaces. 

 

We are a supplier and manufacturer of all types of rubber seals and gaskets both nationally and internationally. Because our pricing policy is based on centering out, where we deduct the cost of the centre, means you save money.

 

Renowned throughout the sealing industry for our knowledge in the sector and our team has over 100 years experience of providing sealing solutions. So, if your gasket requirement is out of the ordinary, we will work with you to create a custom designed seal suitable for your application by offering advice on polymer type, seal design and method of production.

In addition, we have over 15,000 cutting formes available and two oscillating knife CAD/CAM cutting tables you can be rest assured, delivery will be quick.

Simply give us a call or fill in the enquiry form below and one of our experts will give you all the advice and guidance to meet your rubber gasket requirements.

Rubber Gaskets Enquiry Form

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    Grades of rubber can vary significantly in terms of quality, therefore we only supply rubber manufactured to high standards, from reputable and reliable suppliers which means you get consistent quality.


    Below we will explain about the different polymers that we offer and what they are suitable for, as chemical resistance and operating temperature vary depending on the type of rubber.

    Types of Rubber Gaskets

    Types of Rubber Gaskets

    Click on the links below to download a data sheet on the different grades.

    EPDM & Butyl

    Butyl Rubber

    Butyl Gaskets 

    Butyl gaskets are used with corrosive chemicals like alkaline’s and mineral and aqueous acids. It has good heat resistance (up to 130° C) and excellent ageing properties. Butyl is also the only truly impermeable rubber.

    EPDM Rubber

    EPDM (Commercial)

    GasketsEPDM seals are used in a wide variety of situations. They exhibit good resistance to alkali’s and acids. Commonly used for sealing against water, EPDM’s are also suitable for use with phosphate ethers and solvents.

    WRAS EPDM Rubber

    WRAS Approved EPDM 

    This high-grade EPDM is WRAS (Water Research Advisory Service) approved, meaning it is suitable for gaskets and seals that are used in potable drinking water applications, like pipelines and washers.

    WFQ EPDM Rubber

    White Food Quality EPDM Gaskets

    This grade is suitable for use in food and beverage applications because it is compliant with FDA and EC1935:2004. It is resistant to many chemicals and ozone. It can be used at temperatures up to 115° C.

    Hypalon & Natural

    Hypalon Rubber

    CSM/Hypalon™ Gaskets

    Hypalon™ is resistant to most inorganic chemical products. It has good resistance to general acids, oils, and greases. Also, it has excellent resistance to oxidation and ozone. CSM’s also resist fire and are self-extinguishing when the flame is removed.

    Tan Para Rubber

    Tan Para/Natural Rubber 

    Tan para, or shotblast is extremely abrasion resistant so if you need a gasket or seal to be resilient, this may be the best choice, with it being a natural rubber, it can operate down to -40° C. It is very soft so will compress well.

    Rubber Gaskets

    Natural Rubber/SBR Gaskets

    SBR/Commercial gaskets are suitable for a variety of low-pressure seals. It has good resistance to many inorganic chemical products but limited resistance to mineral oils. SBR is not suitable for use with oxidising acids or general organic liquids.

    WFQ Natural Rubber

    White Food Quality Natural 

    WFQ Natural is suitable for a variety of sealing applications and food stuffs. All the ingredients in this formulation have been checked against the latest update of the CFR21 FDA 177-2600 ingredient listings and are present at the level permitted.

    Natural Rubber BS1154 

    This high-grade range meets the BS Standard 1154. There are 5 grades described by their hardness Z40, Z50, Z60, Z70 and Z80. By using a BS grade such as this means you get consistency of supply as, no matter the manufacturer, the grade must comply.

    Natural Rubber/SBR c/w Insertion Gaskets

    The fibreglass or cloth insertion in this option means that the gaskets have additional strength and won’t stretch as much as non-reinforced grades. Its chemical resistance properties are the same as SBR without the reinforcement.

    Polychloroprene/Neoprene

    Rubber Gaskets

    Chloroprene /Neoprene Gaskets

    Neoprene was one of the first synthetic polymers to be developed. It is resistant to inorganic chemical products except oxidising acids and halogens. It has good resistance to heat, ozone, and weathering. We also offer this grade with an insertion.

    Flame Retardant Neoprene – NCB158 

    Our flame retardant Neoprene Gaskets give additional safety in the workplace. We offer several grades, NCB158 (National Coal Board Spec.) which is also anti-static. NFF16101 and UL94 VO Rated, plus ISO 340/BS490 Anti-Static, subject to minimum orders.

    BS2752 Neoprene Gaskets

    Our BS2752 range of Neoprene gaskets comply with the exacting British Standard to ensure your gaskets and seals always meet the same specification. The range covers 5 hardness’s from 40 Sh to 80 Sh, known as C40, C50, C60, C70, and C80.

    WFQ Natural Rubber

    White Food Quality Neoprene Gaskets

    Seals made in white food quality Neoprene have the same chemical resistance as black Neoprene but are made with ingredients that comply with both FDA and EC1935:2004 regulations, making them suitable for food use.

    Acrylonitrile Butadiene/Nitrile

    Nitrile Gaskets

    Nitrile rubbers are resistant to various oils and can be used at relatively high temperatures. It should be noted though, that with the increase of Biofuel in petrol and diesel, care should be taken in these applications. A reinforced grade is also available.

    Semperit P559 Nitrile 

    This high grade Semperit material has good mechanical properties and is suitable for use with unleaded fuel with a swell rate of around 20% compared to a commercial Nitrile’s 60%. It is suitable for most aliphatic and aromatic oils.

    BS2751 Nitrile Gaskets

    With a choice of 5 hardness’s BS2751 Nitrile gaskets are made to the same exacting standards, no matter the rubber manufacturer. Seals made in these grades will last longer in service than commercial NBR grades.

    FDA White Nitrile 

    Suitable for contact with dry foods means this oil resistant grade is mostly used within the food processing industry. Compliant with both EC1935:2004 regulations and CFR21 FDA 177-2600.

    Blue Food Quality Nitrile Gaskets

    Blue gaskets are becoming increasingly popular for seals within the food industry because there are very few blue foods, making it easier to spot a gasket leak. This grade complies with EC1935:2004 and FDA regulations.

    FDA Blue Metal Detectable Nitrile 

    The food safe additives in this high-grade Nitrile mean that if the gasket fails, metal detectors, commonly installed on food processing and pharmaceutical lines can pick up on it. Again, it complies with FDA and EC1935:2004.

    Silicone

    60° Sh A Silicone 

    We manufacture Silicone gaskets in a range of colours. All our Silicone is WRAS approved and FDA/EC1935 compliant. Silicone is resistant to a wide range of general chemical products and can operate at high temperatures, +230° C Continuous, +250° C Intermittent.

    Platinum Cured Silicone Gaskets

    Platinum cured silicone has better tensile and tear strength than peroxide cured silicone. It can also be made clearer because of the curing process which makes it the preferred material in medical, pharmaceutical and food sectors.

    40° Sh A Silicone Seals

    This softer grade of silicone is ideal for making gaskets and seals to be used in low pressure sealing applications. Because all silicones are inert, it makes them the preferred choice for many food and beverage processing plants.

    Blue Metal Detectable Silicone 

    Our blue FDA metal detectable silicone gaskets are used in food processing industries and the pharmaceutical sector. The grade has food safe particles within it that can be picked up by a metal detector in the event of seal failure.

    Viton and FKM

    Beige/Blue FKM 

    Fluoroelastomers have some of the best chemical resistance amongst synthetic polymers. These FDA compliant grades are ideal for use in many environments, for instance, pharmaceutical, where there is exposure to harsh chemicals or solvents.

    Viton A™ Gaskets

    This speciality polymer is part of the Viton family of materials. Viton gaskets are usually used in situations where resistance to heat, fuels or chlorinated solvents is required. Viton has excellent resistance to hydrocarbons, aliphatics, aromatics, and chlorinated chemicals.

    FKM Gaskets

    FKM fluoroelastomer is priced competitively for applications that are cost sensitive. Having excellent chemical resistance and resistant to ozone, oxygen and natural weathering means that seals made from FKM have a long service life.

    Nomex Re-inforced FKM Gaskets

    This Nomex reinforced FKM is used where additional strength is required in applications like diaphragms. It has a minimum fluorine content of 66% which means it is extremely chemical resistant and durable.

    As with all types of rubber, it is recommended that the polymer type is tested for suitability as grades do vary.

    We are happy to advise on any application, but final responsibility lies with the customer.

    Viton A™ is a trademark of The Chemours Company

    Rubber Gaskets FAQs

    It may sound a little daunting, but this simply creates a standard way to determine the compressibility capabilities of the gasket. The three categories are soft, medium, and firm.

    Gaskets can be manufactured in a range of configurations with different combinations relating to materials, dimensions, and other key attributes. Here at Munsch & Co, our manufacturing equipment offers a total of over 15,000 cutting forms, meaning you can find the perfect match for your intended application.

    While a homemade gasket out of flat cardboard may work for some simple home DIY projects, you should always use professionally manufactured gaskets for cars or industrial use. This is because they are carefully designed to deliver a watertight seal and withstand the outside elements of temperature and pressure. Besides, they’re not expensive.

    When the gasket is designed to seal oil in a car engine, storage tank, or industrial machine, nitrile is the most effective material type. They are cut from a larger metal sheet. Neoprene gaskets are another popular option thanks to their economical attributes.

    Several gaskets may be deemed suitable for food production equipment, but they must meet MHRA regulations. Nitrile, silicone, neoprene, EPDM and natural rubber are the most common choices as they are non-toxic, flavourless, odourless, and hypoallergenic. They operate efficiently at a wide range of temperatures and prevent bacteria growth.

    Like any moving part, gaskets do encounter wear and tear. But they are very durable. A gasket’s lifespan is influenced by several factors, including its functional workload and frequency of use. When you choose a high-quality product that matches the intended use, it should last for anywhere from 5 to 20 years.

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