All of our drum bung cap seals are available in 2 inch and 3/4 inch and are designed to fit steel drums  with a round bung.They are available in any color and your required logo .At the same time,our drum bung cap seals also fit a few plastic and fiber drums. Upon drums are filled,  drum bung cap seals are screwed in the flanges using pneumatic or hand operated bung tightener or torque wrench. To secure the contents of the drums against theft and adulteration during shipment,  that is why drum bung cap seals are applied . These  drum bung cap seals  sit on top of the flanges and are ‘crimped’ using drum cap seal crimping tools (also named drum cap sealers). Once  drum bung cap seals are crimped, the plugs or bungs can be unscrewed only by breaking these  drum bung cap seals .