Flex-Tex Installation Instructions
last revision: 3/1/03
To install Flex-Tex Joint Sealant, follow these easy installation instructions. Proper assembly will result in a form-in-place, high-density gasket that conforms to the sealing surfaces and fills in surface voids and irregularities.
- Select a Joint Sealant width that is 1/3-1/2 of the flange sealing surface width. A guideline for round, 150# & 300# ANSI flanges is as follows:
| Flange Size | Joint Sealant Size |
|---|
| Up to 1/2" | 1/8" |
| 3/4" to 1-1/2" | 3/16" |
| 2" to 4" | 1/4" |
| 5" to 8" | 3/8" |
| 10" to 16" | 1/2" |
| 18" to 24" | 5/8" |
| 24" to 36" | 3/4" |
| 36" and above | 1" |
- Clean seal surface of dirt, grease and all other forms of debris.
- Measure and cut off a length of Joint Sealant that is several inches longer than the mean length of the seal surface. Joint ends must overlap.
- Remove the peel-off backing.
- As diagrammed below, beginning to the left of a bolt hole, apply FLEX-TEX clock-wise to the flange surface inside the bolt hole circle, overlapping the ends in an "X" fashion.
- Bolt up mating surfaces. Torque in a "star-type" pattern, and in steps, preferably 60%, 90%, and finally 100%. It may be necessary to make a repeat pass at 100% in the event some relaxation occurs.
