The 30WGAL is an Armlock® overseal ring for 1 gallon metal paint cans (also known as "Old Style"), designed, tested and certified to pass UN hydrostatic pressure test of 95 kpa. These overseals are made of HDPE and are easily applied with either a paint can closer or a rubber mallet. The 30WGAL locks the lid to the can to prevent the can from opening in transit. When sealed properly, the Armlok® is a key component to meeting many UN packaging requirements.

Differences between Armlok® I (Old Style) vs. Armlok® II (New Style)
  • Armlok II is a more robust component
  • Armlok II has a flatter profile and is 50% wider than the original
  • Armlok II limits the amount of plug deformation caused when a gallon paint can is pressurized
  • Armlok II results in a more consistent seal when applied mechanically
  • Armlok II has Bway Packaging embossed on the profile vs. Brockway Standard
  • Armlok II has a symbol indicating proper way to take ring off.


High-Density Polyethylene PlasticHigh density polyethylene (HDPE ) is the most commonly used resin. This economical plastic has good impact resistance, is naturally translucent, flexible and typically used for personal care products such as shampoo bottles. Adding color will give HDPE an opaque look that will result in an increase in weight and rigidness. We have a variety of these rigid and tough high density polyethylene products in stock, from containers, pails, bottles, caps, tubs and jugs. HDPE works well in below freezing temperatures. HDPE heat compatibility varies. Maximum fill temperature is generally around 145°F; however, testing is recommended with your specific product and application.


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility. The Cary Company does hereby disclaim any and all warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose or use. We are not responsible for consequential damages arising from customer's selection and use of containers, container and label dimensions, and/or closures supplied by us.

Additional Information

More Information
Capacity1 gal.
Case Pack270 ea.
Pallet Pack8,640 ea. (32 Cases)
Country of ManufactureUnited States
Q & A
Customer Questions
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
What is an overseal ring?
Overseal rings, like Armlok® and Normlock™ rings, are plastic rings that secure paint can lids to prevent paint and coating products from leaking during storage and shipping. These seals add an extra measure of protection to securing the lid and are easily applied using a paint can closer or rubber mallet. When sealed properly, these rings are a key component to meeting many UN packaging requirements for metal paint cans.
Are these overseal rings made for all types of paint cans?
Armlok® and Normlock™ overseal rings are made for metal paint cans and lids. We also have some overseal rings made specifically for plastic or hybrid paint cans. These rings are sized for ½ pint, 1 pint, 1 quart and 1 gallon paint cans. If you’re considering an overseal ring as packaging for your product, you are welcome to request a sample to test the compatibility of your packaging with these seals.
How do you attach and remove these overseal rings?
Make sure the paint can lid is secure. To attach, place the ring on top of the can. Use a rubber mallet to secure ring onto lid. You can also use a paint can closer to apply the ring. To remove the ring, use pliers to grab the bottom edge of the ring and pry off. You can view a video of this process by clicking on the Videos tab of this product page.
What is the difference between Armlok® and Normlock™ rings?
Armlok® and Normlock™ rings are made by different manufacturers. They’re both typically made of high density polyethylene (HDPE), which offers durability and chemical resistance. Both types are used to secure metal paint cans. We also offer overseal ring options for plastic and hybrid paint cans.
Are overseal rings recyclable?
Our overseal rings are made of either high density polyethylene (HDPE) or polypropylene (PP) plastic, both of which are recyclable materials.
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5 /5

Based on 5 customer(s) reviews

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  • 5

Linnet G.   published 06/16/2022 following an order made on 06/14/2022


Item as described

Amy A.   published 04/06/2022 following an order made on 04/05/2022


As pictured and described.

Anonymous customer   published 07/03/2021 following an order made on 07/02/2021


its a can ring!!!

Anonymous customer   published 06/15/2020 following an order made on 06/09/2020


quality product.

Anonymous customer   published 01/24/2019 following an order made on 01/22/2019


always in stock. No issues.