--- title: "Oil Seals Explained: Types, Materials and How to Choose the Right Seal" description: "Demystifying oil seals: Learn about types, materials, and selection for precision machinery. Trust BTL-UK for expert advice on oil seal solutions." image: https://blog.btl-uk.com/hubfs/Demystifying-Oil-Seals-Types-Materials-and-Selection.png --- [![BTL-Logo (default)](https://blog.btl-uk.com/hs-fs/hubfs/logo-v2-1.jpg?width=1999&height=887&name=logo-v2-1.jpg "BTL-Logo (default)")](https://btl-uk.com/) - [Home](https://btl-uk.com/) - [About](https://btl-uk.com/about-btl-uk/) Show submenu for About - [History](https://btl-uk.com/history/) - [Green BTL-UK](https://btl-uk.com/green-btl-uk/) - [News](https://btl-uk.com/news/) - [B2B Web Shop](https://btl-uk-shop.com/) - [Blog](https://blog.btl-uk.com) - [Product Catalogues](https://btl-uk.com/online-product-catalogues/) - [Manufacturing](https://btl-uk.com/manufacturing/) - [Warehouse](https://btl-uk.com/warehouse/) - [Quality](https://btl-uk.com/quality-assurance/) - Industries Show submenu for Industries - [Automotive](https://btl-uk.com/automotive/) - [Agricultural](https://btl-uk.com/agricultural-industry/) - [Construction](https://btl-uk.com/bearings-pt-linkages-construction/) - [Industrial](https://btl-uk.com/bearings-pt-linkages-industrial/) - [Motorsport](https://btl-uk.com/bearings-pt-linkages-motorsport/) - Contact Us Show submenu for Contact Us - [Contact BTL UK Ltd](https://btl-uk.com/contact-btl-uk-ltd/) - [Home](https://btl-uk.com/) - [About](https://btl-uk.com/about-btl-uk/) Show submenu for About - [History](https://btl-uk.com/history/) - [Green BTL-UK](https://btl-uk.com/green-btl-uk/) - [News](https://btl-uk.com/news/) - [B2B Web Shop](https://btl-uk-shop.com/) - [Blog](https://blog.btl-uk.com) - [Product Catalogues](https://btl-uk.com/online-product-catalogues/) - [Manufacturing](https://btl-uk.com/manufacturing/) - [Warehouse](https://btl-uk.com/warehouse/) - [Quality](https://btl-uk.com/quality-assurance/) - Industries Show submenu for Industries - [Automotive](https://btl-uk.com/automotive/) - [Agricultural](https://btl-uk.com/agricultural-industry/) - [Construction](https://btl-uk.com/bearings-pt-linkages-construction/) - [Industrial](https://btl-uk.com/bearings-pt-linkages-industrial/) - [Motorsport](https://btl-uk.com/bearings-pt-linkages-motorsport/) - Contact Us Show submenu for Contact Us - [Contact BTL UK Ltd](https://btl-uk.com/contact-btl-uk-ltd/) - [BTL Precision](https://btlprecision-uk.com) - [Dunlop](https://bearings-transmissions-linkages.com) - [Medway](https://medwaypt.com) - [TC Oil Seals](https://btl-uk.com/oil-seals/) - [MSK Medical](https://btl-uk.com/msk-medical/) - [Abbies’ Army](https://www.abbiesarmy.co.uk) - [BTL Precision](https://btlprecision-uk.com) - [Dunlop](https://bearings-transmissions-linkages.com) - [Medway](https://medwaypt.com) - [TC Oil Seals](https://btl-uk.com/oil-seals/) - [MSK Medical](https://btl-uk.com/msk-medical/) - [Abbies’ Army](https://www.abbiesarmy.co.uk) ![blog-banner-image](https://blog.btl-uk.com/hubfs/BTL_UK_Theme_July2022/BTL-Blog-Banner.jpg) # Blog ![Oil Seals Explained: Types, Materials and How to Choose the Right Seal](https://blog.btl-uk.com/hubfs/Demystifying-Oil-Seals-Types-Materials-and-Selection.png) # Oil Seals Explained: Types, Materials and How to Choose the Right Seal 19 Dec 2025 It is crucial to utilise oil seals to prevent the accidental leakage of lubricant and potential damage to sensitive internal components. Also known as rotary shaft seals, oil seals play a vital role in this process but, because they are available in a variety of types, sizes, and materials, it can be challenging to select the right ones for each industrial application. In this article, we’ll demystify these essential components, focusing on their types and materials, and discussing how to select the right one for your precision engineering machinery. [![CONTACT US](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/25963554/fd4b096d-527f-4df7-8665-dbdb160cb2da.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25963554/fd4b096d-527f-4df7-8665-dbdb160cb2da) ## Where Oil Seals Are Used > Oil seals are widely used in machinery that relies on rotating shafts and lubricated components. Common applications include: > > • Electric motors > • Gearboxes > • Pumps > • Agricultural machinery > • Conveyor systems > • Industrial power transmission equipment ## Oil Seal Types  When it comes to types of rotary shaft oil seals, there's a variety from which to choose, with the Trusted Containment (TC) seal being one of the most common. Often referred to as the R23, TC oil seals feature a distinctive double-lip design that is equipped with a self-tightening spring. This innovative design ensures effective containment and sealing of lubricants, making them a preferred choice in various applications. The double-lip of TC seals offers enhanced sealing capabilities, especially in environments in which preventing contamination is critical. ## Oil Seal Sizes  Oil seals are sized based on three critical dimensions: - Inside Diameter (ID) - Outside Diameter (OD) - Width (W) Typically, standard sizes are marked directly on the seal which simplifies the process of identifying and ordering the correct seal for your specific application. However, if you are unsure which size seal you require, it’s advisable to seek professional advice from the experts at BTL UK. ## Materials  Oil seals are manufactured from a variety of materials, each of which is suited to specific operational needs, so it is important to select the most appropriate one for your application. NBR/Nitrile and FKM/Viton are popular due to their compatibility with a variety of operating conditions. - **NBR/Nitrile:** Known for its good oil resistance and durability, making it suitable for many general-purpose sealing applications.  - **FKM/Viton:** As well as excelling in high-temperature environments, FKM/Viton is renowned for its strong resistance to chemicals and heat. ##  Choosing the Right Oil Seal  Selecting the correct oil seal depends on several factors including shaft speed, operating temperature, pressure, and environmental conditions. Choosing the correct seal material and design helps ensure reliable lubrication, reduced wear and longer equipment life. If you need assistance selecting the right oil seal for your machinery or industrial equipment, [**contact the BTL-UK team**](https://btl-uk.com/contact-btl-uk-ltd/) to speak with one of our specialists. [![New call-to-action](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/25963554/ef47fc19-6aa3-40cf-a6df-637d8e9458e6.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25963554/ef47fc19-6aa3-40cf-a6df-637d8e9458e6) Image Source:[ Canva](https://www.canva.com/photos/MADesLM9044-oil-seal-with-shallow-depth-of-field/) ### Posts By Topics - [Manufacturing (15)](https://blog.btl-uk.com/tag/manufacturing) - [Automotive (8)](https://blog.btl-uk.com/tag/automotive) - [Supply Chains (7)](https://blog.btl-uk.com/tag/supply-chains) - [Ball Bearings (6)](https://blog.btl-uk.com/tag/ball-bearings) - [Linkages (6)](https://blog.btl-uk.com/tag/linkages) - [Aerospace (2)](https://blog.btl-uk.com/tag/aerospace) - [Oil seals (2)](https://blog.btl-uk.com/tag/oil-seals) see all ### Recent posts [Rod End Bearings vs Clevis Joints: What’s the Difference?](https://blog.btl-uk.com/rod-end-bearings-vs-clevis-joints-whats-the-difference) [What Affects Lead Times in Engineering and Manufacturing?](https://blog.btl-uk.com/lead-times-in-engineering-and-manufacturing) [How to Measure a Missing V-Belt: Pulley Measurements and Belt Length Calculation](https://blog.btl-uk.com/measure-a-missing-v-belt-guide) [Proper Bearing Maintenance: A 7-Step Guide](https://blog.btl-uk.com/guide-to-ball-bearing-maintenance) ### Subscribe to our blog [Request a quote](https://btl-uk.com/contact-btl-uk-ltd/) [![The Manufacturer's Guide To Overcoming Distribution Problems ](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/25963554/0bc40963-9f09-4e87-a124-6f0254d1164e.png)](https://blog.btl-uk.com/the-manufacturers-guide-to-overcoming-distribution-problems) [![Free Catalogue](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/25963554/3a157c35-1675-4d03-92a8-b792d90da72d.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25963554/3a157c35-1675-4d03-92a8-b792d90da72d) [![New call-to-action](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/25963554/ef47fc19-6aa3-40cf-a6df-637d8e9458e6.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/25963554/ef47fc19-6aa3-40cf-a6df-637d8e9458e6) ## Brands - [![BTL-Precision-Link-1](https://blog.btl-uk.com/hubfs/BTL_UK_Theme_July2022/BTL-Precision-Link-1.webp)](https://btlprecision-uk.com/) ##### [**BTL PRECISION**](https://btlprecision-uk.com/) ###### BTL Precision is a subsidiary of BTL-UK producing high quality sub-contract high precision engineered components to individual customer requirements. ###### Capabilities include CNC, sliding head and auto lathes and milling machines and gear cutting of timing pulleys, sprockets and gears used in industries including aerospace, automotive, agricultural, motorsport, safety, transport, and telecoms, working together with customers to overcome design and application difficulties. - [![dunlop-1](https://blog.btl-uk.com/hubfs/dinlop-1.webp)](https://www.bearings-transmissions-linkages.com) ##### [**DUNLOP**](http://bearings-transmissions-linkages.com/) ###### The Dunlop brand is an instantly recognised symbol of reliability around the world, with a reputation for high-quality products and service. ###### At BTL-UK we have a passion for performance that is built into our company DNA, we are continuously pushing boundaries and developing new, exciting technologies and products. 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General purpose civil face protection for the public and company employees, can be obtained cost efficiently whilst more demanding applications FFP2 respirator face masks are fully certified to BS EN 149:2001. ###### CE marked to meet all UK and European regulations. When used in conjunction with MSK face shields this gives care workers maximum reassurance and protection. - [![TC-Oil-Seals-Brands-371x192-1](https://blog.btl-uk.com/hubfs/BTL_UK_Theme_July2022/TC-Oil-Seals-Brands-371x192-1.png)](https://btl-uk.com/oil-seals/) ##### [**TC OIL SEALS**](https://btl-uk.com/oil-seals/) ###### Oil Seals also called rotary shaft seals are widely used to prevent the leakage of a medium (such as oil and grease) along a rotating shaft. ###### It is a mechanical component used to seal in the lubricant, oil and grease being the most common liquid substances found in any power transmission system such as an engine, gear box or electric motor, but also seals all general liquid substances. - [![Megachain-link](https://blog.btl-uk.com/hubfs/Megachain-link.png)](https://btl-uk.com/megachain/) ##### [**MEGACHAIN**](https://btl-uk.com/megachain/) ###### MEDWAY MEGACHAIN drive belts are a new generation of low maintenance high performance Antistatic synchronous (Timing) Belts. ###### Offering an additional 25% transmittable power over standard belts and produced from antistatic compounds to be electrical conductive and meet ISO:9563 making them the ideal choice in an explosive atmosphere or in situations where there is a risk of fire. ###### The RPP profile is one of the quietest drive belt systems available on the market today, in addition further reductions in noise can be achieved by reducing belt widths due to the higher performance rating of the system, MEGACHAIN can also be used in existing drive systems without the necessity to replace the pulleys. ##### About Us BTL-UK LTD is proud to be a committed European manufacturer of Bearings, Power Transmission and linkage products, as well as high quality sub-contract precision engineered turned, milled and gear-cut components. 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