General Information: |
Teflon
is used in valves because of its excellent resistance to chemical
attack and its strength at low temperature. It is electrically
non-conductive and has an extremely low coefficient of friction. |
Basic Composition:
|
Tetrafluoroethylene |
|
Mechanical Properties: |
|
Hardness |
28 Rockwell 'R' |
Density |
0.078 lbs/cub.in. |
Specific Gravity |
2.1/2.2 |
Water Absorption (24hrs) |
.005% |
Max. Useful Temperature |
260 Deg.C (500 Deg.F) |
Colour |
White Opaque |
Size Range: |
|
Imperial |
3/32" to 7/8" inclusive (stock sizes) |
|
Larger sizes up to 6" to order |
Tolerances: |
3/32" to 7/16" |
1/2" to 7/8" |
Basic Dia.Tolerance |
±.002" |
±.003" |
Sphericity |
.001" |
.002" |
Corrosion Resistance: |
Teflon
is resistant to nearly all corrosive reagents. It is particularly
useful with wet chlorine. |