Thermoseal WaterSIL

Specially formulated compressed gasket material based on NBR and aramid fiber, WaterSIL is a universal high-pressure gasket material that is certified to NSF 61 and meets strict chemical leaching requirements.

Applications: NSF/ANSI 61 certified gasket material for use in potable drinking water systems and fixtures for public drinking water, food and beverage, hospitality and plumbing supplies.

Benefits of products certified to NSF/ANSI 61 drinking water system components

Potable water systems have miles of piping and other devices such as pumps, meters and valves. All of these components require gaskets. Gasket materials certified to NSF/ANSI 61 ensure the safe passing of water on its journey to the consumer's tap.

NSF/ANSI 61 establishes minimum health effect requirements for the chemical contaminants and impurities that are directly imparted to drinking water systems. It also determines what contaminants may migrate or leach into drinking water and confirms that they are below the maximum levels allowed to be considered safe. Market leaders strive to attain NSF certification as a mark of distinction that assures their product does not leach harmful contaminants or impurities into drinking water.

Certification to NSF/ANSI 61 ensures that the product meets the Safe Drinking Water Act requirements that protect public drinking water supplies in the US. NSF/ANSI 61 certification can often meet or fulfill the testing requirements for many other countries as well.

THERMOSEAL WaterSIL is specifically formulated to meet the NSF/ANSI 61 standard for sealing materials. It also has excellent dielrectic strength properties. The dielectric strength is the maximum working voltage a material can withstand without breaking down, thus limiting corrosion in the pipeline systems.

Look for the THERMOSEAL WaterSIL logo and NSF mark on the packaging to ensure your gasket material complies with NSF/ANSI 61 - Drinking Water System Components - Health Effects.

Typical Values refer to 1/16" material unless otherwise specified

Compressibility

ASTM F36 J

10%

Recovery

ASTM F36 J

50% min

Dielectric Strength

ASTM D149-95a

18 kV/mm

KLINGER cold/hot
compression

Thickness Decrease at 73°F (23°C)
Thickness Decrease 572°F (300°C)

10% Initial
25% additional

Density

ASTM F1315

100 lb/ft3

Creep Relaxation

ASTM F38 B (1/32")

25%

Sealability

ASTM F37 A (1/32")

<0.25ml/hr

Thickness Increase in H2O
Weight Increase in H2O

ASTM F146

0% to 5%
0% to 5%

Line Call Out

ASTM F104

F712111B4E12K6M4

 
 
 

NSF/ANSI 61 Certification

For Pipe Gasket Sizes 1" to 144" or 1.7 sq. inch per liter in other

Potable Water at Commercial Host 180°F (82°C) Max

Color and Markings

 

White Unbranded

Pressure & Temperature Graphs

Material Thickness: 1/16"

Liquids

WaterSIL-Liquids

Gases & Steam

WaterSIL-Gases-Steam

The pressure/temperature graphs shown are the most current method of determining the suitability of a gasket material in a known environment. Use the pressure and temperature graphs to select the most suitable material for your application.

  • 1. In area one, the gasket material is suitable using common installation practices subject to chemical compatibility.
  • 2. In area two, appropriate measures are necessary for installation of the gasket to ensure maximum performance. Please call or refer to the KLINGER® expert software system for assistance.
  • 3. In area three, do not install gaskets in these applications without first referring to the KLINGER® expert software system or contacting Thermoseal Inc.'s technical support service

These graphs were developed from testing Klinger materials. Do not use them for competitors' materials since non-asbestos gasketing materials do not have service equivalents.

Use: The limitations of use, as shown in the graphs, are for guidance only, and are based on 1/16" thick material. The limitations of use decrease significantly as gasket thickness increases. Do not use a thicker gasket material or "double gaskets" to solve a gasket problem without first consulting the manufacturer. The ability of a gasket material to make and maintain a seal depends not only on the quality of the gasket material, but also on medium being sealed, the flange design, the amount of pressure applied to the gasket by the bolts and how the gasket is assembled into the flanges and tightened. Thermoseal engineers can advise on gasket selection and installation based on specified operating conditions. If you are in any doubt, fax us at 937.498.4911 or phone us at 937.498.2222.

For Additional Information Call Toll Free 1.800.990.7325 or email This email address is being protected from spambots. You need JavaScript enabled to view it.