CT (continuous thread)Closure requiring full rotation to be opened and closed.Liquids, chemical products, VMS, food
TO (twist off)Twist off closure opened with a short rotation and mainly used in the food sector in combination with glass products.Mainly food sector
MTO (Medium TO)The medium Twist Off is a cap with height between TO and DTOMainly used in the food market
DTO (Deep TO)The Deep Twist Off is the “deepest” cap which gives a premium look to your product.Mostly used in the food sector with glass jars for premium appearance.
CRC (Child resistant closure)Special CT closure which must be pushed down and turned simultaneously for opening. Safe system which stops children accessing the product.Any product which requires some child protection like VMS, cleaning products, detergents, most chemical products
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TE (Tamper evident)Closure offering visible proof of opening by breaking a safety rim on first use.Any product which requires a proof of opening.
CRC/TEChild resistant closure AND tamper evident rim. Required for specific markets.Any products which requires child protection as well as proof of opening
ROPP (Roll on Pilfer Proof) / PP (Pilfer Proof)/ PFPAluminum caps offering a tamper evident rim with EPE linerWines, spirits, waters, soft drinks, carbonated drinks, food, pharma
DIN18German based norm for dropper bottles with neck finish allowing addition of specific dropper, pipette and capsPharma, essential oils, alcoholic solution, e-liquids
GL 18/20/22French version of the DIN neck finishPharma, essential oils, alcoholic solution, e-liquids 
HG (Hinged)Specific neck finish fitting snap on cap, may have a tamper evident rimPills, tablets, pharma & parapharma products, chewing gum, confectionery
GPI/GCMIUS norm with 2 separate numbers. The “400” numbers indicate the height of the neck finish and the second one the diameter of the neck finish.Mainly used in cosmetic or parapharma and with pump, pourer, dispenser, dropper, etc.
PS22PS liner is a foam sheet inserted into caps. When the cap is closed, the sheet is pressed against the rim of the container edge and sealing is activated.  
IHSCommon liner, sealed to the container by induction heat. Perfect for protecting flavors, oil or powdered products.  


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