A: Vocal problems, like polyps, are not restricted to singers. While singers require peak performance of their voice, other voice professionals, such as teachers, lawyers, clergy, salespeople and receptionists, are also at higher risk for many vocal cord problems.
The permissible operating temperature range of nitrile rubber is â40 to +100 Â°C (â40 to +210 Â°F). For brief periods, temperatures of up to 120 Â°C (250 Â°F) can be tolerated. SKF also offers a special nitrile rubber compound with a temperature range between â55 and +110 Â°C (â65 and +230 Â°F).
1-16 of 58 results for Temperature-indicating crayons. 1  Markal Thermomelt Temperature Indicator Heat Stick. 2  Markal - Temperature Indicating Crayon, 250Â° Fahrenheit, Â±1% Accuracy (Pack of 1) by Lawson. 3  Thermomelt Temperature Indicating Sticks.  Markal - Temperature Indicating Crayon, 400Â° Fahrenheit, Â±1% Accuracy (Pack of 1) by Lawson. Currently unavailable. Markal Thermomelt Temperature Indicator Heat Stick, 350 Degrees Fahrenheit, 5 Length TemperatureRatingDegrees: 350 Degrees Fahrenheit Model: 86697 Misc. by Home & Tools.