{"id":792,"date":"2025-03-07T13:46:02","date_gmt":"2025-03-07T05:46:02","guid":{"rendered":"https:\/\/hengoseal.com\/?p=792"},"modified":"2025-05-07T10:28:45","modified_gmt":"2025-05-07T02:28:45","slug":"oil-seals-vs-dust-seals","status":"publish","type":"post","link":"https:\/\/hengoseal.com\/da\/oil-seals-vs-dust-seals\/","title":{"rendered":"Oil Seals vs. Dust Seals \u2013 Which One Do You Need in 2025?"},"content":{"rendered":"

Usikker p\u00e5 om du har brug for en oliet\u00e6tning<\/strong> eller a st\u00f8vt\u00e6tning<\/strong>? I\u2019ve been there. I\u2019ll walk you through their differences, so you don\u2019t end up choosing the wrong seal for your application.<\/p>\n

Oil seals and dust seals serve different purposes: one keeps lubrication in<\/strong>, the other keeps forurenende stoffer ud<\/strong>. Here\u2019s how to decide.<\/p>\n

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Keep reading to discover which sealing solution works best for motors, gearboxes, and off-road machinery.<\/p>\n

What is the main difference between an oil seal and a dust seal?<\/h2>\n

Many people confuse dust seals and oil seals\u2014but their jobs are quite different.
\nOil seals<\/strong> are for lubricant retention<\/strong>, mens st\u00f8vt\u00e6tninger<\/strong> are for blocking external contaminants<\/strong>.<\/p>\n

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Oil seals (also called rotary shaft seals) are used in lubricated rotating machinery<\/strong> to prevent oil leaks<\/strong>, such as in gearboxes or hydraulic pumps. Dust seals (wiper seals) are designed for harsh outdoor environments<\/strong>, blocking dirt, mud, and water<\/strong> that could damage the shaft.<\/p>\n\n\n\n\n\n\n\n\n\n
Feature<\/strong><\/th>\nOliet\u00e6tning<\/strong><\/th>\nSt\u00f8vforsegling<\/strong><\/th>\n<\/tr>\n<\/thead>\n
Fungere<\/td>\nRetains lubricant<\/td>\nBlokerer st\u00f8v og snavs<\/td>\n<\/tr>\n
Ideel brug<\/td>\nMotors, gearboxes<\/td>\nConstruction, off-road<\/td>\n<\/tr>\n
Materiale<\/td>\nNBR, FKM, PTFE<\/td>\nNBR, FKM<\/td>\n<\/tr>\n
Ans\u00f8gninger<\/td>\nLubricated systems<\/td>\nDust-prone systems<\/td>\n<\/tr>\n
Almindelige modeller<\/td>\nTG4, TCV<\/td>\nEC, DKB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Want to dive deeper into seal structure? Check out our TC oil seal structure guide<\/a>.<\/p>\n

Which seal material is best for your application?<\/h2>\n

Not all rubber is created equal\u2014choosing the right material is essential.
\nBruge NBR<\/strong> for basic oil or dust resistance, FKM<\/strong> for heat\/chemicals, and PTFE<\/strong> when speed is key.<\/p>\n

Let\u2019s break it down:<\/p>\n