You have no items in your shopping cart.
headerimage
    • July 2021
/ Getting To Know Materials: PTFE

Getting To Know Materials: PTFE

  • ptfe o-ring
  •  
  • ptfe
  •  
  • o-rings
  •  
  • material facts
  •  
  • fact sheet
  •  
  • rubber orings
  •  
  • plastics
  •  
  • apg oring
Getting To Know Materials: PTFE

What is PTFE? Polytetrafluoroethylene, better known as PTFE, is a material founded by E.I. DuPont in 1938 and has become a widely popular choice of material when sealing a wide range of chemicals, acids, bases, and steam. This tough material cannot be compressed very easily, which is good for abrasion resistance but bad for properly sealing liquids. This is the main reason why PTFE is mostly used as a backup ring, seals, brushing, plugs, and washers.

Advantages

Corrosion Resistance

PTFE is a super durable material that is highly resistive to any type of corrosion. It is pretty much unaffected by any type of chemical no matter how acidic or base heavy it is. Oils stand no chance in trying to corrode this material, and UV and sunlight have little to no accent on PTFE. This makes PTFE perfect for almost any type of installation no matter where it is used.


Wide Temperature Range

As seen from the chart above, PTFE has a wide range of temperature it can endure. From -328ºF to +500ºF, this material can withstand almost any extreme temperature climate it is thrown in. This material is best suited in applications such as cryogenics or high heat oven and even combustion processes.

 

.
Disadvantages

Inelasticity & Leakage

PTFE is made from a super hard material that almost feels like plastic. The non rubber feeling material will not return to its original state if stretched or bent. PTFE O-Rings are generally not used as the main sealing material in liquid chemical applications as it could cause leakage. PTFE Backup Rings are generally used in conjunction of O-Rings. Other types of O-Rings like Nitrile, Aflas, and Fluoroelastomer are a rubber material and have elasticity with them and pair well with PTFE backup rings.


Related Items

  • PTFE O-RING -386

    APG Item Number: TFE386 


  • PTFE O-RING -276

    APG Item Number: TFE276


  • PTFE O-RING -210

    APG Item Number: TFE210


  • PTFE O-RING -466

    APG Item Number: TFE466


  • PTFE O-RING -437

    APG Item Number: TFE437

 
Suggested Articles

Get To Know: Backup Rings

Backup rings are commonly installed with O-Rings to improve their performance. Backup rings are useful for many different reasons but the main reason is by blocking or reducing the extrusion gap. This prevents the O-Ring inside to be damaged or extruded causing ...

Five Factors in Choosing The Right O-Ring

You can have the most innovative and high-tech equipment, but if you don’t have the right o-ring in place it may be rendered useless. The importance of choosing the right o-ring for any application should never be underestimated as the appropriate size and material selection can...

Written By:
Written By 
Matthew Miller.
Digital Marketing Specialist
LinkedIn

Stay Connected!


Get the latest updates on products, new knowledge base posts, and everything APG!




Connect with an expert
CONTACT US >
See why APG has been Trusted Since 1943
LEARN MORE >