Immediately indicates unauthorised opening. Perfect for determining whether the cap has been removed.
A) Tamper-evident cap, blue, with conical seal and tamper-evident ring.
B) Tamper-evident cap, red, with PE foam lining and tamper-evident ring.
C) Tamper-evident cap, white/red, with push and turn function, tamper-evident ring, conical seal and degassing membrane.
D) Tamper-evident cap, white/blue, with push and turn function, conical seal and tamper-evident ring.
without Fig.) Tamper-evident cap, red, degassing cap, with conical gasket and degassing membrane. | 
