This document gives specifications for the 26 mm intermediate depth crown cap, lined with a plastic gasket and designed to seal bottles conforming typically but not exclusively to ISO 12821 and ISO 12822 standards for pry-off and existing specifications for twist crown. It specifies the dimensional requirements that are of direct importance to the customer/bottler and recommendations for cap application. The gasket material and profile are not specified as a number of different profiles are available depending on the end use and supplier specific technology. The requirement placed on the gasket profile design is that it needs to be fit for purpose used in conjunction with glass finishes in reference.