The Acme Griptight PPSealis a versatile pull-tight seal manufactured from two dissimilar materials. The acetyl insert is unique in design as it incorporates two sets of locking teeth moulded in one insert, unlike similar seals requiring two separate inserts. The material will withstand freezing and boiling conditions, whilst the polypropylene body is flexible for easy use. The design includes rolled heat staking technology to secure the insert to the body, which provides clear evidence of tampering if forced open or cut. There is also a tear off tag for easy removal, making this a very user friendly seal suitable for most applications.