22-400 Black PP Cap | 12 Pack

Our standard 22-400 mm caps are the most economical cap for our 4 oz Boston Round Bottles and are suitable for most applications. This cap is not approved for corrosive materials and can not be used in an autoclave. The standard F-217 foam liner ensures that your product is contained and secure.

Looking for a matching bottle?

With a 22-400 cap finish, these caps are specifically designed to fit our 4 oz Glass Boston Round Bottles.