Low-friction, non-cohesive fluoro elastomer

TOMBO™ No. 2670-FA-F

Rubber O-ring Fluoro-Plus

Fluoro-Plus is a special fluoroelastomer that maintains the chemical resistance and heat resistance of a regular fluoroelastomer but has significantly improved wear resistance and non-stickiness.
Fluoro-Plus is different from outer membrane coatings and is a product that undergoes treatment by way of a surface improvement method. As a result, it maintains its attributes over the long term and it experiences no peeling of the surface layer.

Product Category

Elastomer ProductsPTFE Covered Elastomer / General Purpose Elastomer


Chemistry & PetrochemistryOil Refining & PetrochemistryChemistryElectronicsSemiconductors & Flat Panel Displays (FPD)Electronic Components


Heat resistance guide: 200°C
Standard hardness (Duro A): 70
Its friction coefficient is about 1/2 of a standard fluoro elastomer.
Its adhesion with metal is about 1/5 of a standard fluoro elastomer.
It undergoes surface modifying processing and so there is no peeling of the surface layer.


Sealing of parts that continuously slide or move along a surface, parts that open and close repeatedly (sealing of various control valves), and parts that adhere strongly to metal and are difficult to maintain.

Precautions for use

Fluoro-Plus is less adaptable to mating surfaces than Fluoroelastomer FA, so do not use it for applications that require a high vacuum seal.


Test method
Test sample: O-ring (JIS P 26)
Compression rate: 25%
Flange material: aluminum
Heating conditions: 200°C × 22 hrs


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