Westec TPE-R® Waterstops
- Synthetic Rubber Highly Resistant to Oils, Solvents, and Aggressive Chemicals
- Not Readily Soluble in Common Solvents
- Certified to NSF/ANSI Standard 61 for Drinking Water System Components
WESTEC's Envirostop™ TPE-R (Thermoplastic Elastomeric Rubber) 600 Series Waterstops resist a wide range of oils, solvents and aggressive chemicals and are not readily soluble in any common solvent. Alcohols, ketones, glycols, esters and aqueous solutions of acids, bases and salts have little effect on WESTEC TPE-R Waterstop. TPE-R will swell in aromatic solvents, halogenated organic solvents and hot petroleum oils. Featuring excellent ozone resistance, low temperature flexibility and excellent high temperature (up to 257° F) performance. Our synthetic rubber is heat weldable for easier and higher quality field splicing.
Westec Envirostop TPE-R waterstop has been tested and certified by NSF to NSF/ANSI Standard 61. NSF/ANSI Standard 61 establishes minimum health effects requirements for the chemical contaminants and impurities that may be indirectly imparted to drinking water. Although more commonly known for its use in chemical containment applications, TPE-R waterstop is now widely used as an effective alternative to stainless steel waterstop for ozone contact structures in the water treatment industry. In addition to ozone contact structures, Westec TPE-R waterstop can be specified for any drinking water containment structure where NSF/ANSI Standard 61 certification is required for joint sealing materials.
The #638 Expansion Board Cap seal was designed with the contractor in mind. The leave-in-place forming system eliminates the split form and checkerboard requirements. The Cap Seal Profile creates a perfectly placed waterstop and joint seal in one unit and a single installation. The EB Cap eliminates a second mobilization for placing the sealant and eliminates a maintenance item for the owner.
| Physical Properties | ||
| Tensile Strength | ASTM D-638 | 2000 psi (13.8 MPa) |
| Ultimate Elongation | ASTM D-638 | 450% |
| 100% Modulus | ASTM D-638 | 1000 psi (6.9 MPa) |
| Shore A Hardness | ASTM D-2240 | 85 Units +/- 5 units |
| Brittle Point | ASTM D-746 | -70° F (-57° C) |
| Ozone Resistance* | ASTM D-1171 | Passed 450 pphm |
| Peel Strength @ 23° C | ASTM D-816 mod. | 22 pli |
* contact a Greenstreak engineer for ozone test data for higher concentrations