Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensions, materials and finish
5 Design and construction
5.1 Flanges
5.2 Plugs
5.3 Capseals and overseals
5.4 Label rings and protection rings
Annex A (normative) Octagonal base closure system (type A closure)
Annex B (normative) Serrated base closure system (type B closure)
Annex C (normative) Octagonal (G 2)/hexagonal (G 3/4) base closure
system (type C closure)
Annex D (informative) Plug wrench adaptors
Annex E (informative) Closing torques
Bibliography