This specification covers mechanical end-face seals for centrifugal and positive displacement pumps for shipboard use. Mechanical seals shall be classified by type, grade, and class. Types: type A - inside single mounted seals, type B - outside single mounted seals, type C - double seals, type D - tandem seals, type E - gas seal, and type F - special arrangement/applications vacuum or gas seal. Grades: grade 1 - basic end face seal, grade 2 - cartridge seal, and grade 3 - split seal. Classes: class 0 - nonsplit seal assembly, class 1 - partial split seal assembly, solid gland, class 2 - partial split seal assembly, split gland, class 3 - fully split seal assembly, solid gland, and class 4 - fully split seal assembly, split gland. Seal life shall be defined in terms of the time period in which the mechanical seal functions properly under its specified service.
Products specifications
Standard from ASTM
Published:
Edition: 13
Document type: IS
Pages
ISBN:
ICS: 47.020.30
National Committee: American Society for Testing and Materials (ASTM) ,Philadelphia, USA