PCO 1881 neck
A short 28 mm neck about 17 mm tall. The most common standard for water and soft drinks: about 1.3 g lighter than PCO 1810, so every bottle costs less.
- Neck height
- ≈17 mm
- Thread diameter
- 28 mm
- Our items
- 8, from 19.2 to 40 g
- Bottles
- 0.5, 1 and 1.5 L
The three standards compared
PCO 1881 and PCO 1810 caps are not interchangeable: the neck is chosen to match the cap and the capper.
How to check the neck on your line
Open the tool- Take a bottle from your lineYou need a finished bottle or a preform, not a cap.
- Measure the neck heightFrom the top of the neck to the support ring: about 17 mm for PCO 1881, about 21 mm for PCO 1810.
- Check the thread diameter28 mm for PCO 1881 and PCO 1810, 38 mm for 5 L bottle necks.
Questions
Why is PCO 1881 lighter?
The neck is shorter and thinner, and the neck does not stretch during blowing, so the PET saved goes straight to the price. The difference from PCO 1810 is about 1.3 g per preform.
Will a PCO 1810 cap fit?
No. The thread and the tamper band position differ, so caps for the two standards are not interchangeable. Switching to PCO 1881 usually means new caps and capper adjustment.
Does it work for carbonated drinks?
Yes, PCO 1881 is widely used for sparkling water and lemonades. Choose a preform from the upper end of the weight range for your bottle size.
Not sure about the standard?
Send a photo of the neck next to a ruler and we will tell you which preform fits.
