Socket

See Female Hex ConnectorA hexagonal shaped socket..

Soft Lining

See Cured-In-Place Pipe (CIPPCured In Place Pipe; a rehabilitation technique whereby a flexible resin-impregnated tube is installed into an existing pipe and then cured to a hard finish, usually assuming the shape of the existing pipe.) or LiningA rehabilitation process where a length of material is introduced to extend the life of the existing sewer. The lining may or may not utilize some structural strength from the existing sewer,  and it may or may not function as a structural enhancement within the existing sewer, or an internal non-structural coating or lining material applied to a pipe. with Cured-In-Place Pipes.

Softening Temperature

There are many ways to measure the softening temperature of a plastic. The commonly reported Vicat Softening TemperatureThere are many ways to measure the softening temperature of a plastic. The commonly reported Vicat Softening Temperature method is to measure the temperature at which penetration of a blunt needle through a given sample occurs under conditions specified in ASTM D 1525. method is to measure the temperature at which penetration of a blunt needle through a given sample occurs under conditions specified in ASTMAmerican Society of Testing and Materials; technical organization formed for the development of standards on characteristics and performance of materials, products, systems and services, and the promotion of related knowledge. D 1525.

Solar Radiation

The emission of light from the suns, including very short ultraviolet wavelengths, visible light and very long infrared wavelengths.

Solubility

The amount of one substance that will dissolve in another to produce a saturated solution.