Polyseal Caps Help to Prevent Leakage

Our black phenolic polyseal caps have a low density polyethylene cone liner which can help to prevent leakage on small glass bottles. Most of our customers choose this cap for use on our boston round glass bottles. They form to the inside of the bottle neck giving a wedge type of seal. Our customers also refer to these caps as cone caps, phenolic caps, and black cone caps.
We would be happy to provide samples for testing with your glass bottles. Please note: these caps are not meant for plastic bottles.
- 33 430 Black Polyseal Cap
- 33 430 Black Phenolic Cone Cap
- 38mm Black Phenolic Polyseal Cap Under Side
- Black phenolic polyseal cone cap
- Cone caps Underside
- 20mm 400 Phenolic Cone Cap
PolySeal Cap Choices
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top Item: PCA0180PS20002 UN Rating: Opening: 18 400 Pack: 6500 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top Item: PCA0200PS20001 UN Rating: Opening: 20 400 Pack: 5500 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top
Item: PCA0220PS20001 UN Rating: Opening: 22 400 Pack: 4700 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top Item: PCA0240PS20001 UN Rating: Opening: 24 400 Pack: 4200 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top
Item: PCA0280PS20001 UN Rating: Opening: 28 400 Pack: 3100 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top
Item: PCA0330PS20001 UN Rating: Opening: 33 400 Pack: 2300 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top
Item: PCA0330PS20002 UN Rating: Opening: 33 430 Pack: 1400 |
![]() |
Low Density Polyethylene Cone Black Plastic Ribbed Sides/Smooth Top
Item: PCA0380PS20001 UN Rating: Opening: 38 400 Pack: 1600 |
Tags: boston round glass bottle caps cone caps cone liner glass bottle caps low density polyethylene liner phenolic caps polyseal caps polyseal liner prevent leakage wedge type seal
Categories: caps and closures