The Acme Griptight Gen2 Seal is a heavy duty pull-tight seal manufactured from two dissimilar materials. The acetyl insert is durable and will withstand freezing and boiling conditions, whilst the nylon body is flexible for easy use. The design features rolled heat staking technology to secure the insert to the body, which provides clear evidence of tampering if forced open or cut. This seal is suitable for most applications where strength is a requirement.