The Ultimate Guide to Using and Safely Locking a Bag Seal

The Ultimate Guide to Using and Safely Locking a Bag Seal

Posted by Steve Diebold

When it comes to protecting valuables, important documents, or large quantities of products, knowing how to properly secure bags is necessary. Security seals on bags are an important part of keeping your things safe from theft or contamination. They turn common bags into strong security personnel for your most valuable items.

Whether made of plastic or fabric, common bag types are endowed with a security seal makeover. These seals, often in the form of plastic bands, encircle the bag's top, undergoing a firm tightening process that creates a tamper evident barrier. Some bags come equipped with strategically placed "eyelets" or holes near the top, providing a convenient threading point for the seal and ensuring a secure closure.

In this blog, we will explore the world of bag sealing, where even the most ordinary bags become resilient defenders, especially in the realm of reusable bags, where this practice is commonly employed.

Selecting The Perfect Security Seal For Your Bag

When it comes to bag security, two prominent players, PS-360 and DTZIP seals, stand out for their multifaceted utility. Which is why this article delves into their specific applications when it comes to securing bags, shedding light on their distinctive features and optimal uses.

PS-360, characterized as a plastic flat band security seal, boasts approximately 8 inches of a functional strap. What sets it apart is the robust multi-point plastic lock mechanism, engineered for exceptional strength and resistance against tampering. A notable addition is the inclusion of a tab, offering a secure attachment point for information tags if required.

DTZIP, on the other hand, is a plastic pull up security seal that comes equipped with an impressive 16 inches of usable band and a distinctive stainless steel locking tab. The tab's passage through slots in the band creates an exceptionally strong hold that remains irreversible. DTZIP also flaunts a larger "flag" portion, providing ample space for additional printing, including highly readable custom markings like logos and barcodes.

Both models present optional Gripping Teeth, ideal for enhancing their hold on a variety of bags. Alternatively, the smooth band option (designated NT, for No Teeth) caters to bags with eyelets or those susceptible to damage from sharp teeth, offering a versatile solution tailored to diverse bag security needs.

4 Easy Steps to Use and Securely Lock a Bag Seal

Securing your belongings will surely become a seamless task with our four easy steps to use and lock a bag seal. Each step ensures not only simplicity but also the highest standards of security, providing you with the peace of mind that your valuables are protected.

1. Be Sure to Tighten it Well

To get the best protection, you must first learn how to tighten it well. Put as much tension on the seal band as you can without damaging the bag or seal. This important step not only deters unwanted access but also prevents the security seal from being accidentally or purposefully moved.

Tightening ensures that tools attempting to manipulate the lock mechanism are rendered ineffective, and the only way to open the bag is by cutting off the seal. While hand locking is typically sufficient, tools designed for plastic cable ties can assist in achieving an extra layer of tightness.

2. Trim the Excess for a Smooth Surface

Once the seal is securely tightened, the next step involves cutting off the excess band, leaving a sleek and tamper evident finish. While some users opt to leave the excess band for visual verification, it becomes unnecessary if the seal is fully tightened.

The smooth pull tight seals, when secured and excess band removed, offer a level of security that prevents reattachment after removal. With minimal remaining band, there's no practical way to loop it around the bag and reinsert it. Your bags stay not only tightly sealed but also fortified against any attempts at tampering.

3. Don’t Forget to Seal Smaller Bags

Let's face it, finding creative solutions to the problem of closing smaller bags requires a high level of creativity. But believe it or not, one easy way to actually make a bag that is too small to fit snugly when closed is to twist and fold it over twice to increase the diameter.

This approach not only addresses the issue of bags that are initially too petite for a snug fit but also provides a practical solution to ensure a secure closure. By adopting this method, you can confidently secure even the smallest bags with a reliable and tamper resistant seal, demonstrating that simplicity often conceals the most creative yet practical solutions

4. Marking and Printing

The final step in bag sealing involves marking and printing, adding an extra layer of customization to your security measures. Both PS-360 and DTZIP models are open canvases for letters, serial numbers, and stock pre-stamped seals with "SEALED" and numbers.

You can also opt to elevate your security game with custom stamping and printing, including logos and barcodes. The options are diverse, from hot stamps and lasers to durable roller prints. If extensive custom printing is your requirement, the DTZIP security seal, with its additional space and flexibility, emerges as the optimal choice.

In Need of Security Seals? Contact Us Today!

Dealing with bag security opens up a world of possibilities, and if you find yourself in need of the perfect security seal solution, reaching out to us is the key to unlocking peace of mind.

Whether you're navigating special requirements or facing challenges with our standard seals, our commitment goes beyond the ordinary. We stand ready to address your unique needs and provide tailored solutions that amplify the security of every bag, regardless of its size.

For personalized assistance, contact American Casting & Manufacturing, the leading security seals provider, via email at, or give us a call toll-free at 1-800-342-0333 within the US or 516-349-7010 from anywhere in the world. Our website,, serves as your comprehensive guide, offering details about all our locations, complete contact information, and showcasing the latest additions to our product lineup.