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I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?

P.S. Original in Russian:

15 г крема в алюминиевой запечатанной тубе с белым полиэтиленовым колпачком, имеющим перфорационный пробойник.

 

Проколите запечатывающую мембрану при помощи острия на внешней стороне колпачка.

I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?

P.S. Original in Russian:

15 г крема в алюминиевой запечатанной тубе с белым полиэтиленовым колпачком, имеющим перфорационный пробойник.

Проколите запечатывающую мембрану при помощи острия на внешней стороне колпачка.

I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?

I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?

P.S. Original in Russian:

15 г крема в алюминиевой запечатанной тубе с белым полиэтиленовым колпачком, имеющим перфорационный пробойник.

Проколите запечатывающую мембрану при помощи острия на внешней стороне колпачка.

I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?

I'm translating a text about an antifungal cream sold in aluminum tubes. The plastic cap of each tube has a spike in it used to break the foil/seal in the neck of the tube.

I'm not sure what these spikes are usually called. I googled but failed to find a description. It is spike or some other term?