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).
Silicone rubbers are often one-or two-part polymers, and may contain fillers to improve properties or reduce cost. Silicone rubber is generally non-reactive, stable, and resistant to extreme environments and temperatures from -55 Â°C to +300 Â°C while still maintaining its useful properties.cetoxy tin condensation is one of the oldest cure chemistries used for curing silicone rubber, and is the one used in household bathroom caulk. The smell of vinegar in the form of acetic acid is the usual indicator that the reaction is incomplete.