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Our line of high quality, tamper-evident plastic strap security seals are offered in a variety of lengths and breaking strengths to match specific security needs. This includes adjustable length seals, beaded pull-tight seals and fixed length seals. For additional convenience, there are options to order custom colors, printing and barcoding. All of our plastic security seals are set at affordable prices and made in the USA, allowing for fast and dependable delivery.
Plastic security seals provide tamper evidence on containers, valves, bags, and equipment at a low cost per unit. They function as indicative seals, meaning they do not physically block access, but their visible breakage or absence immediately signals that someone has opened the sealed item. Common applications include tote bins, fire extinguishers, utility meters, airline duty-free trolleys, transit bags, and pharmacy supply carts.
The two primary categories are pull-tight (adjustable-length) seals and fixed-length seals. Pull-tight seals thread through a hasp or loop and cinch to a snug fit, making them versatile across a wide range of applications. Fixed-length seals have a predetermined strap length suited to specific apertures like meter hasps or valve handles, offering a consistent, repeatable fit where uniformity matters. Within those categories, options include padlock-style plastic seals, flat strap or band seals with a snap lock, and hybrids that combine plastic bodies with light wire for added flexibility in routing.
Breaking strength varies by design. Standard 8-inch pull-tight seals typically range from 30 to 90 lbs of pull strength, while larger or reinforced models reach higher. The correct figure to evaluate is the lock-to-break strength of the assembled seal, not the raw material tensile strength. For tote bins and courier bags, a 25 to 50 lb model is generally appropriate. For heavier cargo containers or high-risk utility meters, we recommend requesting samples and field-testing before ordering in quantity.
Yes. Plastic seals are available with custom sequential numbering, barcodes, company name, and color coding. Custom colors are especially useful for color-coded security programs where different departments, routes, or inspection cycles use distinct seal colors, making it easy to spot a seal that is out of place at a glance. Sequential numbering is critical for any audit trail, since it makes a swapped or cloned seal immediately detectable. Minimum order quantities apply; contact us for a quote.
Plastic seals are indicative-class devices, not barrier locks, and a determined person with side-cutters can remove one in seconds. Their value lies in detection and deterrence: a broken or missing seal tells you immediately that something has been accessed, and sequential numbering creates an audit trail that discourages opportunistic tampering. For shipments where physical resistance is required, cable seals or bolt seals offer significantly higher breaking strength and greater tool requirements for removal.
Most plastic seals, particularly those made from polypropylene or nylon, resist moisture and are suitable for outdoor and refrigerated environments. Prolonged UV exposure can make some plastics brittle over time, so for long-term outdoor applications, confirm the material grade before ordering. For harsh marine, chemical, or extreme-temperature environments, a cable seal or metal seal typically offers better durability.
Plastic seals are standard across logistics and trucking, food and beverage distribution, pharmaceutical packaging, utility metering, banking and cash-in-transit, healthcare supply carts, and retail loss prevention. Their low unit cost makes them practical at high volume, and a single shipping operation may use thousands per week. Because they are lightweight and apply by hand without tools, they are also the default choice for fire extinguisher pins and airline duty-free trolleys.
Most pull-tight and fixed-length plastic seals cut cleanly with side-cutters, wire snips, or heavy-duty scissors, with no need to force them. Frangible breakaway designs snap by hand at the score point with a firm pull or twist. Always record the serial number before cutting, inspect the seal body for any signs of prior tampering before disposal, and document the removal in your seal log immediately.