The ASTM Classification System for Gasket Materials and Its Use

The origin and purpose of ASTM Standard F104 -- Classification System for Nonmetallic Gaskets -- is described as a method of characterizing a gasket material. The nature of its flexibility and versatility are outlined. Examples are made illustrating how the system is meant to be used by consumers who have definite requirements and wish to secure a gasket material which manufacturers could provide to meet these needs.