30WGKW is a polypropylene (PP) overseal ring designed to fit all 1 gallon plastic paint cans. These ring locks are easily applied with either a paint can closer or a rubber mallet. It locks the lid to the can to prevent the can from opening during the shipping process. When sealed properly, this overseal ring is essential in meeting many UN packaging requirements.

Key benefits:
  • Designed to fit all major brands of paint cans
  • Made of polyproylene (PP) plastic
  • Remove with pliers


Polypropylene PlasticPolypropylene (PP) is a tough plastic that has excellent chemical resistance. PP is translucent in its natural state but can have a glossy finish when produced with color. Some examples of common products made with PP are dairy and medication containers. Polypropylene is suitable for hot fill applications of up to 165°F and is therefore great for autoclaving. It is not recommended for cold or sub-freezing temperatures. The Cary Company has an assortment of polypropylene plastics available for purchase, such as plastic caps and jars, which have a higher tolerance for chemical products.


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.

Additional Information

More Information
Capacity1 gal.
Weight0.107 lbs.
Case Pack300 ea.
Case Dimensions26" L x 17" W x 22" H
Case Weight32.1 lbs.
Pallet Pack3,000 ea. (10 Cases)
Pallet Dimensions44" L x 56" W x 49" H
Pallet Weight321 lbs.
Country of ManufactureUnited States
Note:Product availability based on market demand.
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 1 customer(s) reviews

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Jason A.   published 10/17/2022 following an order made on 09/28/2022


These fit really well on the all plastic paint cans, and add another level of protection when shipping the materials.