K.O.K. has been in the sealing and vibration dampening industry for over 60 years. Our Oil Seals are developed with high technology polymeric materials and tested rigorously to make the best oil seals available to OEMs and for aftermarket uses.

Our facilities house state of the art testing equipment that ensure the K.O.K. quality promise you rely on is apparent in every seal.

When selecting an Oil Seal manufacturer, choose K.O.K. We take the time to understand your needs, and help you design and manufacture the Oil Seal with the right materials and performance for your design.

Investment in our production and process in an investment in you, our customer.

See K.O.K.’s Oil Seal Materials See K.O.K.’s Oil Seal Types

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K.O.K. Oil Seal Materials

Types of Oil Seal Materials

We have invested decades and millions into developing the types of Oil Seal materials that meet our customers’ meticulous expectations. K.O.K’s expertise is in developing materials that improve the longevity and performance of our customers’ products.

After understanding your project and design goals, our team will work with you to determine the oil seal material specifications that will suit your needs.

Before producing your Oil Seals, we will look at the requirements such as the following:

Where will the seal be used?
How will the seal be used?
What environmental conditions will the seal be exposed to?
What will it be sealing – oil or grease?
Will the seal need rotary or reciprocal function?
What is the maximum speed of the shaft?
Will there be pressure in the chamber?
And more…

Types of Oil Seals

Once we determine the operating requirements, we have then determine the material to use.

The quality of the oil seal materials is the most important factor. A selection of the most suitable rubber compound, metal and spring must be made with complete care. Any single one of these components cannot be overlooked.

Our compounds are proprietary mixtures of elastomers and other ingredients (in vulcanised or un-vulcanised states), including:

Polymers
Reinforcing Agents
Curing or Vulcanizing Agents
Plasticizers
Accelerator
Anti-oxidants
Antiozonants
Anti-rads

See the types of oil seal materials K.O.K. can produce for your specifications below.

ACM Polyacrylic Rubber

Min/Max Temperature Range: -20℃ ~ +150℃

Min/Max Strength & Compression: 80 & 50

Environmental Exposure Resistance: excellent

Chemical & Flame Resistance: good / Normal

Water Resistance: not recommended

Contact us to learn more about K.O.K.’s ACM Polyacrylic Rubber Materials.

IR Synthetic Polyisoprene

Min/Max Temperature Range: ‘-40℃ ~ +100℃

Min/Max Strength & Compression: 150 & 30

Environmental Exposure Resistance: good

Chemical & Flame Resistance: good / normal

Water Resistance: good

Contact us to learn more about K.O.K.’s IR Synthetic Polyisoprene Material.

NBR & HNBR Nitrile Rubber

Min/Max Temperature Range: -35℃ ~ +120℃ / -40℃ ~ +150℃

Min/Max Strength & Compression: 100 & 25 / 100 & 50

Environmental Exposure Resistance: normal / good

Chemical & Flame Resistance: good & normal / good & normal

Water Resistance: good / excellent

Contact us to learn more about K.O.K.’s NBR & HNBR Nitrile Rubber Material.

VMQ Silicone

Min/Max Temperature Range: -60℃ ~ +230℃

Min/Max Strength & Compression: 60 & 25

Environmental Exposure Resistance: excellent

Chemical & Flame Resistance: excellent / normal

Water Resistance: excellent

Contact us to learn more about K.O.K.’s VMQ Silicone Material.

FKM Fluorocarbon

Min/Max Temperature Range: -20℃ ~ +250℃

Min/Max Strength & Compression:100 & 50

Environmental Exposure Resistance: excellent

Chemical & Flame Resistance: excellent / excellent

Water Resistance: good

Contact us to learn more about K.O.K.’s FKM Fluorocarbon Material.

SBR Styrene Butadiene Rubber

Min/Max Temperature Range: -40℃ ~ +100℃

Min/Max Strength & Compression: 100 & 35

Environmental Exposure Resistance: good

Chemical & Flame Resistance: good / normal

Water Resistance: good

Contact us to learn more about K.O.K.’s SBR Styrene Butadiene Rubber Material.

EPDM Ethylene Propylene

Min/Max Temperature Range: -40℃ ~ +125℃

Min/Max Strength & Compression: 100 & 35

Environmental Exposure Resistance: excellent

Chemical & Flame Resistance: good & good

Water Resistance: excellent

Contact us to learn more about K.O.K.’s EPDM Ethylene Propylene Material.

FFKM Perfluoroelastomer

Min/Max Temperature Range: -30℃ ~ +260℃

Min/Max Strength & Compression:100 & 50

Environmental Exposure Resistance: excellent

Chemical & Flame Resistance: excellent & good

Water Resistance: good

Contact us to learn more about K.O.K.’s FFKM Perfluoroelastomer Material.

Find the K.O.K. Oil Seals You Need

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K.O.K. Oil Seal Materials