Conversion Formulas in Sealing
Below Formulas can be used to convert your required metrics. Cross Section CS = (OD – ID) ÷ 2 Inner Diameter ID = OD – (2 x CS) Outer Diameter OD = ID + (2 x CS) Inner Diameter ID = (CL ÷ π) – CS °F = (1.8 x °C) + 32 °C = (°F – 32) ÷ 1.8 […]
Read MoreWhat is Rubber Shrinkage?
What you need to know about Rubber Shrinkage The calculation of O Ring squeeze is one of the main elements to take into consideration when designing a seal for a particular application. This is because the amount of O Ring by the media can have an impact on the design, material selection, and other important features. O Ring Squeeze – […]
Read MoreTypes of Silicone
Types of Silicone: MQ, VMQ, PMQ & FVMQ – what does it all mean? Silicone is used in a wide selection of industries, including Food & Drink, Pharmaceutical to Aerospace. It presents low toxicity, excellent flexibility, resistance to oxygen, UV, ozone and microbial growth. Silicone as a sealing material has one of the greatest scopes of working temperatures. A Standard […]
Read MoreWhat is the difference between Teflon and PTFE?
Teflon™ vs PTFE The sealing industry is full of trade names, technical phrases, and acronyms, which makes it hard to know what is what. In this learning journal, we will explain what Teflon™ and PTFE are, and also the differences. PTFE – what is it? PTFE is a carbon and fluorine synthetic polymer – Polytetrafluoroethylene. It is obtained from Tetrafluoroethylene […]
Read MoreProfile Seal DIN3869 Advantages & Features
Everything you need to know about Profile Seals DIN3869 Axially static soft seals combined with threaded elements are generally called Profile Seals (DIN3869 Seals or Fluid Connector Seals). They are often used as an alternative to an O Ring/Back-up Ring combination. How do they provide effective sealing? Profile Ring’s purpose is to stop the medium from leakage, at the same […]
Read MoreRubber Compound – what is it?
What is a Rubber Compound? There is a misunderstanding that an elastomer compound is made out of one ingredient and that it is the same for every different type of polymer. The fact is that a rubber compound can be a combination of 3 to 15 various elements and thousands of different formations. Standard elastomer composition based on parts per […]
Read MoreWhat’s the difference between WRC and WRAS?
The below information will help explain those approvals and their differences. 1. What do WRAS and WRC stand for? WRAS – Water Regulations Advisory Scheme WRC – Water Research Council 2. What are the differences between those two approvals? There are no differences. The approval was called WRC, but then renamed to WRAS. 3. Where do the regulations apply? The […]
Read MoreISO3601-5
ISO3601-5: Suitability of elastomeric materials for industrial applications ISO3601-5 specifies the appropriateness of various rubber materials which may be used for the production of O Rings intended for use in industrial applications. ISO3601-5 also specifies the capability of the materials to fulfil many of the demands related to fluid power elements and systems. This includes fluid compatibility and temperatures. The […]
Read MoreISO3601-4
ISO3601-4: Anti-extrusion rings (back-up rings) ISO3601-4 defines tolerances and dimensions for five types of back-up rings (anti-extrusion rings): (T1) – Spiral Type (T2) – Angle Cut Type (T3) – Solid Type (T4) – Angle Cut Concave Type (T5) – Solid Concave Type These back-up rings are used with chosen O Ring sizes as defined in ISO3601-1 and the applicable housing […]
Read MoreImportance of O Ring Lubrication
Why is O Ring lubrication important? Why lubricate? All kinds of lubrication, including oils, greases, water and air are used to reduce wear by minimising heating and friction of moving elements. Any substance that accomplishes this, can be called a lubricant. Types of lubricants Lubricants help reduce friction in the application. These lubricants can be: Semi-Permanent Lubricant Coatings There are […]
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