|Total Thickness||0.50 mm|
|Length||Upto 50 metres|
An advanced and adaptable valve stem/pump shaft packing material used for gland or stuffing box packing at site.
The self winding method and forming the required size of the gland packing at site is very practical and simple, especially as any dimension can be prepared quickly.
A Pre-determined length of tape depending upon the radial width (the space between stem or shaft and the cylinder bore) is wrapped around the stem or shaft until the stuffing box is filled. The wound tape is then pushed down into the stuffing box and compressed to half its width by close fitting split pushers and the gland follower. With the help of a scale before and after compression of tape, the packing mechanic will be able to judge the extent of compression achieved. The stem or shaft under gland load should be turned every time before the next ring is formed. This process is repeated till the depth of the stuffing box is full.
Spitmaan Grafseal Tape has infinite shelf life and can be kept in readiness in every store as a part of the maintenance kit. By using the tape the inventory of preformed rings of different types and cross sections can be reduced to a minimum, offering advantages with regard to maintenance and repair work.
Grafseal Tape brings down the inventory to only a few rolls of tape of different thicknesses and widths.
These Tapes are also available with adhesive backing to form gaskets on a " Do It At Site " basis.
Grafseal Universal Adhesive Gasket Tape
At high temperatures, the adhesive backing carbonizes and becomes an integral part of the gasket itself.
Before using these tapes the following points may be observed:
- The flange surface should be thoroughly cleaned to remove rust, foreign particles, grease or oil.
- Thereafter, peel of the paper backing six to eight inches and start laying tape on the flange and press against it. When the tape reaches the starting point, lap the tape not more than 2 mm and cut with a sharp knife.
- For additional thickness when the starting point is reached, do not cut the tape but roll out the flutes in the already formed gasket with a smooth roller and repeat step 2 above. It is important that the top layer is positioned exactly above the first layer already formed.