Construction
- Teflon® filament yarn with PTFE dispersion and an inert break-in lubricant.
- Square interbraid.
CHEM-4 Packing
General service, chemically resistant
compression packing – rotating
equipment and valve applications
Features / Benefits
- Chemically resistant 0–14 pH – reduces inventory costs.
- Non-contaminating – will not contaminate the process media.
- Non-Asbestos – reduces handling cost.
- High strength – longer life.
- Reduces maintenance and parts costs.
- *Should not be used in chlorine.
Typical Applications
- Highly corrosive media: aggressive acids, strong caustics and solvents.
- Chemical service at low to medium shaft speeds.
- Applications demanding a chemically resistant compression packing.
- Rotating equipment applications and valve service.
- Pulp & Paper Bleach & Brown stock washers.
Specifications
Construction:
Teflon® filament yarn with PTFE dispersion and an
inert break-in lubricant. Square interbraid.
Temperatures:
To -450°F (-268°C) to +500°F (+260°C)
Pressure:
To 300 psi rotary (20 bar)
Speed:
To 1500+ fpm (7.6 m/s)
pH range:
0–14
|
Size |
1/4” |
5/16” |
3/8” |
7/16” |
1/2” |
9/16” |
5/8” |
3/4” |
|
Approx. (ft/lb) Std pkg (lbs) |
16.7 2 |
12 2 |
9.2 1/5 |
6.7 5/10 |
5.4 5/10 |
4.4 5/10 |
3.5 5/10 |
2.3 5/10 |
Also available in metric sizes, die formed pre-packaged sets, and specialty cut lengths. Contact A.R. Thomson Group for any special requirements.
SHAFT SPEED CONVERSATION CALCULATIONS
|
Feet per minute (fpm) Meter per second (m/s) |
|
|
Shaft / sleeve diameter (in) x RPM x 0.262 = fpm Shaft / sleeve diameter (mm) x RPM x 0.0103 = fpm |
Shaft / sleeve diameter (in) x RPM x 0.0013299 = m/s Shaft / sleeve diameter (mm) x RPM x 0.0000524 = m/s |
Limitation of liability: actual performance may vary and is determined by factors unique to a given application. It is recommended that care be taken in the selection and application of materials for hazardous services and controlled testing be undertaken to determine suitability for a specific application. A.R. Thomson Group does not make or imply any warranty of suitability for a particular purpose and is not liable for any damages arising from the use of the information in this sheet. Applications
- Highly corrosive media – aggressive acids, strong caustics and solvents.
- Chemical service at low to medium shaft speeds.
- Applications demanding a chemically resistant compression packing.
- Rotating equipment applications and valve service.