Three simple words, but they have a big impact on how your business performs.  We know that having the right seal at the right time is crucial to your operation because industrial seals are our business.  We carry more than 12,000 SKUs including the broadest range of top-quality industry standard parts.  And if you need something custom, our engineering and design team can help assist with your unique seal requirements – plus, back it up with Dichtomatik in-house TCM brand seals, real-world scenario testing, and our warranty guarantee.

Our comprehensive line of oil seals or shaft seals cover a wide variety of applications including axles, engines, trailers and high-pressure environments. Generally, oil seals are used to seal around a rotating shaft and provide protection from dirt intrusion while retaining an oil-based lubricant within the shaft. We offer sizes in standard and metric oil seals with interchangeable SKU’s from competitors such as SKF seal and National oil seal. Whether it’s a standard metric oil seal or an intricate AP cassette seal, rest assured you will receive the best quality at competitive pricing.

Our distribution and fulfillment operations are available to assist and improve your ability to deliver on orders, provide the tools to help you sell more products to your customers and increase your bottom line by ensuring you have the right product in stock.

Oil Seal Material

Dichtomatik shaft seals are made from a wide range of materials. Depending upon a customer’s application, the material color, durometer, and type can vary. Dichtomatik standard materials are NBR and FKM but other materials are available as needed and are listed below.  We understand that chemical interactions play a role in your material selection.  As an aid, a complete chemical compatibility guide is available here for you to use.

Standard Seal Lip Design

The five principal lip designs, shown below identify the most common lip designs for Dichtomatik shaft seals. It is important to remember that other, more complex, designs are available for special applications. However, the lip designs shown here represent those which will fill the needs of most seal requirements.   These five principal lip designs are also supplemented by a range of more specialized designs for more specific application requirements. For additional information regarding available lip designs contact our engineering experts. 

S = Single Lip with A Garter Spring.

Generally used for sealing lower pressure applications. However, not recommended for use in applications where the surrounding environment contains any dirt or contaminants.

T = Twin Lip with A Garter Spring.

Generally used for sealing lower pressure applications. The additional dust lip provides increased protection for the primary lip. The cavity between the two lips can also be filled with grease to limit shaft corrosion and allow brief operation without media lubrication.

V = Single Lip

Generally used for sealing a non-pressure media, especially for sealing grease or viscous fluids. These seals are also used for dust or dirt exclusion.

K = Twin Lip

As type V above, but the additional dust lip provides increased protection for the primary lip. The cavity between the two lips can also be filled with grease to limit shaft corrosion and allow brief operation without media lubrication.

Standard Seal Case Design (OD Design)

The following identifies the most common case designs for Dichtomatik shaft seals. It is important to remember that other, more complex, designs are available for special applications. However, the case designs shown here represent those which will fill the needs of most seal requirements.  There are five principal case designs, described below. These five principal case designs are also supplemented by a range of more specialized designs for more specific application requirements. For additional information regarding available case designs beyond the standard listings, contact our Dichtomatik Engineering experts.

A = Outer Metal Case with Reinforcing Plate.

This type is designed with an additional inner case providing increased structural rigidity when a more robust design is required. Particularly suitable for larger diameters or when the seal is fitted from behind.

B = Outer Metal Case.

This type is most suitable for steel or cast-iron housing materials. The metal case gives a particularly firm and accurate seat in the housing, but static sealing on the O.D. is partially limited.

C = Rubber Covered O.D.

This type is preferred for soft alloy or plastic housing materials, as well as cast iron or steel. It is also more suitable to use this design in a replacement environment where minor damage to the housing surface has occurred.

F = Rubber Covered O.D.

Similar to design C but additional rubber covering fully protecting the internal steel case. Particularly suitable for applications where corrosion could be a problem.

M = Outer Metal Case with Rubber Lining

Similar to design B but an additional rubber lining covering the internal face of the steel case. Particularly suitable for applications where corrosion could be a problem.

Part Number Creation

Dichtomatik’s TCM line of radial lip seals incorporates the easiest and most complete part numbering system of any major seal producer on the market.  All TCM part numbers are created from the dimensions of the shaft, housing bore, and width for each seal, together with a designation for special lip materials, and the lip and case style.  Dictomatik part numbers appear differently for standard inch sizes versus metric sizes.  Three dimensions, separated by X’s always designate metric seals.  For example, a seal 25x50x10TC indicates a seal made for a 25 millimeter shaft, a 50 millimeter bore, a 10 millimeter width with a TC styple case and lip design.  Inch sizes, however, simply show 5 digits for the shaft, bore, and width.  The first two digits being the inch and and first decimal digit of the shaft size, the third and fourth digit represented the inch and first decimal digit of the housing bore, and the last being the first digit of the width dimension.  An example of a standard inch size seal part number breakdown is illustrated below:

All dimensions are the actual application dimensions, not the actual seal dimensions, except for the seal width.

Need a more specialized solution?

The engineering team at Dichtomatik will work closely with you to understand your project in great deal and to recommend and implement any sealing solution based upon many considerations listed below:

The World Relies on DICHTOMATIK – Do You?

Whatever your needs, Dichtomatik US has both the stock and the expertise necessary to meet them.  If your project calls for standard or custom oil seals, contact us to find the perfect fit.  We are one of the world’s largest provider of sealing products and solutions, trusted by the largest companies around the globe.