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O-Rings
Coated-O-Rings
PTFE Coated Colored O-Rings from Kesaria Rubber Industries are standard ORing finished with an external PTFE coating – most commonly adhered with NBR, FKM, HNBR & EPDM– to improve friction and adhesion performance over a traditional, uncoated PTFE seal.
The coating stays dry to the touch, allows extremely low insertion force, and is engineered for dynamic applications where an uncoated PTFE ring would not be suitable.
Coating Types Available
- PTFE coating adhered with NBR
- PTFE coating adhered with HNBR
- PTFE coating adhered with FKM
- PTFE coating adhered with EPDM
Coating Application Methods
Dry (powder) coatings – an inexpensive treatment commonly used for automated assembly equipment parts, reducing sticking and clumping.
How Coated O-Rings Helps You
Coated O-Rings solve problems that a standard, uncoated Oring often can’t: they reduce friction and installation force, protect against corrosion and chemical attack, extend component life, keep assemblies clean during automation, and use color to speed up identification on the line. For applications where a part moves, sticks, or is handled repeatedly during assembly, a coated O-Ring is frequently a more cost-effective fix than reformulating the O-Ring compound itself.
Easier, low-force installation: the PTFE coating provides outstanding release properties and extremely low insertion force, speeding up assembly.
Improved lubrication and reduced friction: coated rings have low frictional resistance, which matters most in dynamic (moving) applications.
Noise reduction: dampens vibration-driven noise in mechanical assemblies.
Longer service life: high resistance to weathering, chemicals, ozone, UV rays, high temperature, water, and oil extends the O-Ring's usable life.
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What are the benefits of PTFE-coated O-Rings?
PTFE-coated O-Rings reduce friction, allow easier and lower-force installation, and are available in multiple colors for faster visual identification during assembly.
