We supply a comprehensive range of sizes and types of Flip off caps and seals to suit the customers requirements. These flip off caps come pre-assembled, ready to crimp on serum vials. The plastic flip top vial caps are easily flipped off to expose the underlying aluminum seal and centre exposed rubber stopper. Available Sizes : 13mm, 20mm , 28mm ,32mm and 34mm with Printed/ Plain autoclave aluminum seal. We can also provide Flip top seals with clients Company Logo embossed on the plastic flip