What is a Polymer? In Michael M. Coleman and Paul C. Painter’s book, Fundamentals of Polymer Science: An Introductory Text, they described a Polymer as a large molecule, or macromolecule, composed of many repeated subunits. Polymer actually means “many-parts” (poly-, “many” + -mer, “parts”) in Greek. It can be both synthetic and natural. Natural Polymers Synthetic Man Made Polymers Rubbers […]
ViewSour Gas Resistant O Rings: What is Sour Gas and which elastomers are resistant to it? What is Sour Gas? Sour Gas is a gas stream that contains hydrogen sulfide (H2S), a poisonous gas found in Oil & Gas wells around the world. H2S is highly corrosive and will react and degrade polymers including many types of elastomers. It will […]
ViewO Rings Scotland: M Barnwell Services Scottish Branch Specialize in Supplying O Rings, including Nitrile (NBR), Vition (FKM), Silicone (VMQ), FFKM and many more. Branch Manager Eddie Crawford and his team are O Ring specialists, with the technical and commercial expertise to solve the most complex of sealing problems. They are the one-stop shop for O Rings Scotland. M Barnwell […]
ViewWhat is an O Ring – Selecting, Material and Storage In this news/blog item, we look to answer what is an O Ring? The O Ring or Toroidal Seal is a simple, versatile and economical device with a vast range of uses. The most common of these is a static seal replacing a gasket or sealing washer, but it can […]
ViewOur most popular O Ring Material is Nitrile (NBR) 70° Shore ‘A’. This is an Elastomer seal that can do the majority of standard industrial applications. These include Oil, Petrochemical, Water and the majority of chemicals up to 100°C and 1500psi (providing the mating surfaces and housings are adequate). For low temperatures (below -30°C), high temperatures and pressures, as well […]
ViewHydraulic and Pneumatic Seals: Solutions for all machines in every industry M Barnwell Services Hydraulic and Pneumatic seals are known for their longevity and durability and are used by many well-known OEMs in food, construction, pharmaceutical, plant, pneumatic and hydraulic applications. We offer seals in Metric and Imperial sizes. They are available in a variety of materials, including Rubberised Fabric, […]
ViewO Rings – The UK’s largest collection from stock M Barnwell Services are the largest independent manufacturer, stockist and distributor of O Rings and Back-Up Rings in the UK. With 50 million in stock, we supply to over 5000 customers globally every month – quickly and reliably. We have an extensive range of seal materials including Perfluoroelastomer (FFKM), Nitrile (NBR), Hydrogenated […]
ViewHigh Pressure Seals UK M Barnwell Services range of High-Pressure Seals are laboratory tested under pressure and can help reduce maintenance and avoid downtime. All our High-Performance Seals are suitable for sealing pressures over 10 p.s.i. (0,7 Bar) and are tolerant to chemicals and solvents, multi-phase fluids and temperatures allowing for long-lasting performance. If you are unsure of what you […]
ViewMetric and Imperial O Ring Cord M Barnwell Services O Ring Cord has the profile of an O Ring and is supplied as an extruded rubber available by the meter. A wide range of standard extruded Cord is available in various materials including, Nitrile (NBR), Viton® (FKM/FPM), Ethylene Propylene (EPDM), Polytetrafluoroethylene (PTFE), Neoprene (CR), Sponge (Closed and open Cell) and […]
ViewEncapsulated O Rings that are proven to protect the core M Barnwell Services, the UK’s leading manufacturer, stockist and distributor of Fluid Sealing Products offers a comprehensive range of quality Fluorinated ethylene propylene (Teflon® FEP), PTFE and Perfluoroether (PFA) Encapsulated O Rings. The design completely encloses a core material and acts as a barrier if any pressure is exerted on […]
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