Delivering Fluid Sealing Solutions Since 1972


Oil Seal Materials Chart

Material Chart for Oil Seals Oil Seals are also known as a Rotary Shaft Seal, shaft seal, lip seal, elastomeric lip seal or any variation of these. It is a simple device for excluding dust, dirt, water or any other contaminant whilst retaining lubricant in rotary shaft equipment. Generally, it has been developed as a means of protecting the bearings […]

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Types of Nitrile

What are the most popular types of Nitrile? TYPES OF NITRILE: NITRILE Abbreviation: NBR (Nitrile Butadiene Rubber) Temperature range: (Buna-N) between -40°C and +135°C; (Low-Temp) between -65°C and +120°C Hardness Range: 20 – 95 Shore A Industries served: Agriculture, Water, Pump & Gas, Food & Drink, Rail, Automotive, and Bus, Truck & Trailer Key uses: Aircraft, Automotive and Marine fuel […]

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Bondloc Special Offers

For One Day Only – Bondloc Special Offers! SAVE THE DATE: Tuesday 6th February for Bondloc Special Offers On Tuesday 6th February we will have fantastic prices on quality Bondloc products, but be quick – Limited Stock. Bondloc Products on offer include: Pre Application BIPA – Prepbond Wipes (x100) – SAVE 30% Industrial Strength Hygienic Grease Monkey Wipes (x80) – SAVE […]

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Popular types of O Ring applications

What are typical O Ring applications? O Rings can be used in static and dynamic applications as long as there is comparative move between the media and the O Ring. Dynamic applications contain hydraulic cylinder pistons and rotating pump shafts. 1. Reciprocating Dynamic Seals Dynamic reciprocating O Ring applications include a hydraulic and pneumatic piston or rod seals. Smaller diameter […]

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What are Back-up Rings and how to use them?

What are Back-up rings / Anti-extrusion rings? A Back-up Ring is an inflexible ring that holds an elastomeric seal to its outlined shape and in its right place. They are also called Anti Extrusion Rings and are typically used with O Rings to eliminate extrusion at high pressures. For single acting applications – 1 Back-up Ring is sufficient, however for […]

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Trade Names for Seal Materials

Trade Names for Materials

Trade Names for Materials Using trade names for seal materials is very popular in our division in order to define common materials. The chemical names can be quite difficult to remember and quote. Manufacturers and trade names occur for the chemical names containing the most typical compounds. The material’s chemical name is permanently retained (example: Tetrafluoroethylene-Propylene Copolymer). It is not, […]

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EC Regulations For Food

EC Regulations for food contact materials The EC Regulations EC1935/2004 and EC2023/2006 for food contact materials are: Regulation EC1935/2004 of the European Parliament and of the Council Materials and articles intended to come into contact with food Regulation EC2023/2006 of the European Parliament and of the Council Good manufacturing practice for materials and articles intended to come into contact with food […]

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Inflatable Rubber Ring Seal Failure On An Epic Scale

Inflatable Rubber Ring HMS QE

HMS Queen Elizabeth was taking up to 200 litres of seawater an hour because of an Inflatable Rubber Ring sealing failure The UK’s new aircraft carrier, HMS Queen Elizabeth, which was formally approved into Her Majesty’s fleet by The Queen on 7th December 2017 in Portsmouth, had a leak due to a faulty Inflatable Rubber Ring seal around one of […]

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Merry Christmas & Happy New Year

Merry Christmas

Everyone at M Barnwell Services is wishing you and your family a Very Merry Christmas and a Happy New Year!   CHRISTMAS 2017 OPENING TIMES: Monday 18th December – OPEN Tuesday 19th December – OPEN Wednesday 20th December – OPEN Thursday 21st December – OPEN Friday 22nd December – OPEN   NEW YEAR OPENING TIMES: Monday 25th December – CLOSED […]

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WE HAVE A WINNER ‘Find the Santa – Win a Hamper’ Christmas Competition We would like to say big THANK YOU to everyone who participated in our free-to-enter Christmas competition! Our very special congratulations go to Harnak Singh (Daventry), the winner of the fantastic Fortnum & Mason Christmas Hamper!                   The competition […]

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