Outgassing
How to overcome the consequences of Outgassing Outgassing is defined as “the release of a gas that was dissolved, trapped, frozen, absorbed or adsorbed in some materials’’. Parts of rubber formulation, decomposition products of the ingredients or other gasses trapped in the polymer composition during the moulding process can turn unstable and be released under vacuum conditions. Visual Indications and […]
Read MoreCustomers Raise £82 for Cancer Research UK
As part of the ISO 9001:2015 Quality Management System (QMS) M Barnwell Services are required to gain service feedback from its customers. To comply, a selection of customers were sent a multiple choice questionnaire. A £1 charity donation was provided for every completed questionnaire. M Barnwell Services MD Mike Barnwell said: “I am delighted that so many of our customers […]
Read MoreMerry Christmas & Happy New Year 2019
Everyone at M Barnwell Services would like to wish you and your family a very Merry Christmas and a Happy New Year 2019! CHRISTMAS OPENING TIMES Monday 24th December 2018 – CLOSED Tuesday 25th December 2018 – CLOSED Wednesday 26th December 2018 – CLOSED Thursday 27th December 2018- OPEN Friday 28th December 2018 – OPEN NEW YEAR OPENING […]
Read MoreGasket Installation Guide
Gasket Installation – Best Practices The performance of a gasket relies on a number of elements, including: Component being sealed Flange design Type and quality of the material How the gasket is installed and tightened onto the flanges The volume of pressure applied to the gasket by the bolts Sometimes, the most basic reason for leakage in bolted couplings is […]
Read MoreHow does an O Ring work?
What is an O Ring and how does it work? O Ring Basics The O Ring is one of the most standard and easiest types of seal for dynamic and static installations. The design of the O Ring’s groove is fairly straightforward. A dependable and economical seal is acquired by following well-developed principles for groove geometry. The primary reason an […]
Read MoreShore A Hardness
What is a Shore A Hardness and why is it important? What is a Shore durometer? The Shore durometer is an instrument used for measuring the material’s hardness, generally rubbers, elastomers, and polymers. The Shore A hardness measurement is called ‘’durometer’’. Tests are carried out on cured rubber according to ASTM D2240, and on a complete O Ring according to […]
Read MoreWhat is a Gasket?
What is a Gasket and how it works? What is a Gasket? A Gasket is an elastomeric component that covers the intersection between two surfaces. They are usually manufactured from a variety of materials, including rubber, cork or paper, metal, copper, and foam. This flexible element can be used for a broad scope of purposes due to its functionality. These […]
Read MoreTemperature range of Viton™
Viton™ (FKM/FPM) temperature range Fluoroelastomers are known for their excellent resistance to chemicals and temperatures. They have low compression set, resistance to ozone, very low gas permeability, are self-extinguishing and have remarkable ageing features. Viton™ has developed a significant eminence in the sealing industry due to its performance features. Fluoroelastomers are highly fluorinated carbon-based rubbers that are used in installations […]
Read MoreCirclips what are circlips
What are Circlips, types of Circlips and what are they used for? What are Circlips? Circlips, Retaining Rings and Snap Rings are fasteners that grasp elements or installations onto a shaft or in a dwelling/bore when assembled in a groove. Once it’s fixed, the exposed piece functions as a shoulder which holds the particular element or installation. Circlips solve problems such […]
Read MoreWhat is Rapid Gas Decompression (RGD)
What is Rapid Gas Decompression (RGD)? What are the causes? How it affects elastomers? What is Rapid Gas Decompression (RGD)? or What is Explosive Decompression (ED)? Rapid Gas Decompression (RGD) is an occurrence that frequently appears whilst high-stress gas particles drift into the elastomer in the concentrated/compressed form. When the stress ambient to the elastomer is quickly relieved, the compressed gas […]
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