PTFE tubes with fillers

Typical Application: Composite seals
Brand: Jiashan
Supply Ability: 1000pcs
Payment Terms: TT , LC , Others
Tags:
Specification:Composite seals
UseParts:Machinery Industry

 

In most situations, PTFE is the perfect fluoroplastic for a wide range of applications. Though when virgin PTFE is not sufficient, you can choose for PTFE with a filler to obtain better properties. 


Compounds based on PTFE and modified PTFF are filled with glass fibers, carbon fibers, carbon, graphite, molybdenum sulfide bronze or organic fillers (high-per formance thermoplastics). Fillers are used to achieve a multiple of the material's original wear resistance and thermal conductivity as well as a significant reduction of cold flow under load and reduction of thermal expansion


With 20 years history in producing modified PTFE products, Kintowe Company has accumulated rich experience in production, and developed semi-finished mounding products of modified PTFE in various formulas, such as tube materials, pipe materials and rod materials used as sealing parts. We can also produce according to customers’ formulas, providing the best service to meet customers' requirements.


 

Typical Application:

Composite seals

Guide band for pistons and rods

Semi-finished products of PTFE sealing parts

 

The most commonly used fillers and their influences on compound properties:

PTFE with fillers

Influence of fillers

Filler content    in % of weight

Limits of use

PTFE filled with glass fibers 

high pressure and wear resistance as well as better thermal conductivity

very good chemical resistance

good dielectric properties

up to 40%

resistant to organic solvents, non-resistant to alkaline solutions and acids

PTFE filled with carbon fibers

very low deformation under load

good wear resistance, even in water

higher thermal conductivity and lower thermal expansion than glass fibers

very good chemical resistance

up to 25%

carbon fibers are chemically inert

PTFE filled with carbon

high pressure resistance and hardness

good sliding properties and wear behavior

good thermal conductivity

good chemical resistance

low volume and surface resistivity

electrically conductive

up to 35%, also in combination with graphite

compound is brittle filler may be attacked by oxidizing media

PTFE filled with graphite

good lubricating effect

low friction coefficient

no static charging

good thermal conductivity

very good chemical resistance

typically up tp 5%, in exceptional cases up to 15%, also in combination with glass fibers or carbon

high abrasion when used with hard metals, is attached by oxidizing media

PTFE filled with molybdenum disulfite(MoS2)

good sliding properties and wear behavior

good no-lube operation in combination with bronze

up to 10%, also in combination with glass fibers or bronze

not resistant when used with hot, concentrated sulfuric acid

PTFE filled with bronze

good sliding properties and wear behavior 

low clod flow

good thermal conductivity

lower chemical resistance

high pressure resistance

up to 60%, also in combination with MoS2

may be attacked by acids and water

PTFE filled with organic fillers(high-performance thermoplastics)

outstanding sliding properties and wear behavior

good chemical resistance

high pressure resistance in some cases

suitable for soft mating surface, e.g. aluminum

non-abrasive

up to 20%, may be higher in combination with different fillers

 

depending on the respective filler

 


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