Salinity is approximately equal to the weight, in grams, of salt dissolved in 1000 g of seawater. This would be the salt concentration in parts per thousand (). Average ocean water has a salinity of 35.0. This means that 1000 g of average seawater contains 965 g of water and 35 g of salts.
From Wikipedia, the free encyclopedia. RTV Silicone (room temperature vulcanization silicone) is a type of silicone rubber made from a two-component system (base plus curative; A+B) available in a hardness range of very soft to medium-usually from 15 Shore A to 40 Shore.n order for the RTV silicone to reproduce the surface texture, attention is paid to the cleanliness of the original. Vacuum deairing removes entrained air bubbles from the mixed silicone and catalyst to ensure optimal tensile strength, which affects reproduction times.
Condensation-curing WACKER RTV-2 silicone rubbers are composed of a rubber base and a curing agent which contains a tin catalyst. In condensation curing, the polymer chains bond together via a crosslinker and ethanol is released as a by-product.Temperatures exceeding 90 C before curing is complete result in reversion.oom Temperature Vulcanizing silicones have been designed to serve many purposes. Over the years the form and function of these materials has evolved. Here's a basic primer on the basic differences between the grades of RTV and how they work.