Tamper evident cap is also called tamper evident closure,it is a kind of closure cap for a container,with a hinge,a lid,and a closure element which is movable to a tamper-evident position.
DIN40mm Tamper Evident Cap with PE gasket seal used on 1 gallon 4L Jerrycans. 
Items:DIN40mm Tamper-evident screwed cap with foamed liner
Model Number:CFD-AS-TEC-016
Dimensions:DIN40mm
Inner Diameter: 36.90 mm
Outer Diameter: 40.04 mm
Cap Height(Skirt Length): Approx 27 mm including tamper ring, Approx 5.0mm height of tamper evidence ring
Unit Weight: 10g
Materials: HDPE(high density polyethylene) or PP
M.O.Q.: 20000PCS, Minimum purchase requirements apply.
Quantity Per Box: 1000PCS
Gasket: foamed PE disk Liner,silicone rubber,NB Rubber,PVC seals on request.
Color: red,black,yellow,pink,orange,blue,gray,green,white,natural,other colors on request.
Many applications require that when a Jerrycan is opened, the contents inside are still in the same condition as when it was closed.Guarantee your customer impeccable quality by protecting your product against unauthorized opening.When integrated into the closure,tamper-evident caps represent an elegant and cost efficient solution. 
Advantages and benefits of the tamper evident screw caps:
Safe closing,Tamper-proof,tamper-evidence ring attached or molded on,
Provide a reliable protection against leaks,Suitable for packaging of dangerous goods,
Provide excellent chemical stability.
Available with different sealing rings or gasket disks,
Applications of the screw caps:
Packaging for industrial chemical,sterilizers,liquid foods,bleaches,peroxides,fertilizers,pesticides,disinfectants,liquid soap,detergent,pure water.
Our tamper evident caps (temper evident closures ) are good choice for plastic drums or plastic Jerry Cans,plastic bottles. 
This type of tamper evident cap is an indispensable safety factor for the pharmaceutical and chemicals industries. 
CFDPLAS supplies a range of tamper evident caps with the ring located internally,externally or flush with the contour – there is always a suitable cap for your packaging.
CFDPLAS have tamper-evident Screw Caps for industrial containers are available for the following thread sizes: DIN32,DIN38,DIN40,DIN51,DIN61,DIN71 and DIN96.ranging from 4L to 70L plastic drums.
We have many size of tamper evident caps used for 2L,4L,5L,10L,15L,18L,20L,40L,50L,60L,70L plastic containers and drums.
Related plastic tamper-evident caps: 
DIN45mm tamper evident caps,DIN51mm tamper evident caps,DIN61 mm tamper evident caps,DIN71 tamper evident caps,customer made tamper evidence caps,standard screw cps,vented caps,drum cap seal,drum plugs,drum bungs,