All National Plastics clamshells are designed with friction fit channels around the exterior of the package. Should your packaging require more positive seal, we also offer a handheld clamshell sealer or can refer you to a manufacturer of clamshell sealing equipment.

Hand Held Clamshell Sealer

This electric powered hand held clamshell sealer creates a 1/2" x 1/4" sealer and works on the majority of our stock clamshells. Priced under $100, these sealers are ideal for those with relatively low volume applications.