KOK Makes The Best Quality Oil Seals
Oil Seal Materials
KOK has over 60 years of experience in sealing and vibration dampening. Our oil seals are developed using high-performance polymeric materials and tested rigorously for OEM and aftermarket applications.
Our facilities are equipped with state-of-the-art testing systems to ensure consistent, reliable performance in every seal.
When selecting an oil seal manufacturer, choose a partner that understands your application. At KOK, we work closely with you to design and manufacture seals with the right materials and performance characteristics for your requirements. Our investment in materials, production, and process is an investment in your product’s performance.
Types of Oil Seal Materials
We have invested decades into developing Oil Seal materials that meet our customers’ demanding requirements. KOK’s expertise is in developing materials that improve the longevity and performance of our customers’ products.
Project Requirements
After understanding your project requirements and design goals, our team will work with you to determine the Oil Seal material specifications best suited to your application.
Before producing your Oil Seals, we evaluate 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 require rotary or reciprocating function?
- What is the maximum speed of the shaft?
- Will there be pressure in the chamber?
- And more…
Compound Selection
Once we determine the operating requirements, we then determine the material to use.
Material quality is one of the most important factors. The most suitable rubber compound, metal and spring must each be selected with care. None of these components can 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 Oil Seal materials KOK can produce to your specifications below.
Material Options
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 KOK’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 KOK’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 KOK’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 KOK’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 KOK’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 KOK’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 KOK’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 KOK’s FFKM Perfluoroelastomer Material.
