Our plastic plug is designed for neck bore 14 mm in diameter to control the flow rate.
Our PP28 plastic cap with a special flow control plug in
PP18 and PP24 flip top caps for glass bottles
13 - 18 - 20 - 24 - 25 - 31.5 - 35 - 41 mm plastic caps with EPE liners, olive oil pourers or non-seal options