Oil Seal Material 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 […]
Read MoreTypes of Nitrile
What are the most popular types of Nitrile? TYPES OF NITRILE: NITRILE Abbreviation: NBR (Nitrile Butadiene Rubber) Temperature range: between -40°C and +135°C (intermittent/compound-specific up to +150°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 […]
Read MorePopular 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 […]
Read MoreWhat 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 […]
Read MoreEC 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 […]
Read MoreInflatable Rubber Ring Seal Failure On An Epic Scale
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 […]
Read MoreMerry Christmas & Happy New Year
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 […]
Read MoreWhy Do O Rings Fail?
O Ring Failure Guide O Ring failure often occurs too soon in applications due to inadequate gland design or compound choice. This article will explain why O Rings fail by supplying examples of general damage modes. In order to improve seal execution, it is necessary to correctly and effectively identify the damage mode. No matter how careful we are during […]
Read MoreEncapsulated O Ring Advantages
Encapsulated O Ring Advantages & Disadvantages Encapsulated O Ring Advantages. The following article outlines some of the benefits of using Encapsulated O Rings. What is an Encapsulated O Ring? An Encapsulated O Ring consists of an elastomer stimulating core (Fluorocarbon – Viton® / FPM / Silicone), which has a seamless shield made from FEP (Fluorinated Ethylene Propylene) or PFA (Perfluoroalkoxy – copolymer), […]
Read MoreFDA Rubber Materials
Selecting The Best FDA Rubber Material The following article provides an overview of all M Barnwell Services popular FDA Rubber Compounds, which are also compliant with EC1935/2004 & EC2023/2006 Regulations. Fluorocarbon (Viton®/FKM) For high-temperature and chemical resistance. It’s transparent underwater but does not absorb it. Working temperature scope is measured to be between -20°C and +205°C (intermittent/compound-specific between -45°C and […]
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