Maya Ellison
Waterproofing plastic boxes is essential for protecting sensitive items and electronics from water damage. While heavy-duty plastic storage bins offer optimal protection, they are not always airtight, and water can seep in through crevices. To address this, various methods can be employed, such as adding rubber strips, seals, or gaskets to the lid and using straps or bungee cords for added security. Some recommend using duct tape or clear garbage bags to protect the contents, while others suggest purchasing waterproof containers with gasket lids. For those seeking a more permanent solution, rubber O-rings or over-molding techniques can be utilised to create dynamic seals that prevent liquid ingress. Understanding the IP and NEMA standards for waterproof enclosures is crucial to ensure the chosen method suits the specific application.
Characteristics and Values Table for Waterproofing a Plastic Box
| Characteristics | Values |
|---|---|
| Purpose | To prevent water from entering the box and damaging the contents |
| Methods | Use of waterproof bags, duct taping, cling plastic film, gaskets, rubber seals, O-rings, silicone, and other adhesives |
| Box Types | Plastic storage containers, electrical boxes, heavy-duty plastic bins, kitchen boxes |
| Standards | IP and NEMA standards, with IP65 and IP66-67 being common ratings |
| Advantages | Protection from water damage, dust, corrosion, and other environmental hazards |
| Disadvantages | Not all methods are effective in extreme conditions, such as flipping the box |
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What You'll Learn
Use a rubber or silicone gasket
To waterproof a plastic box, one method is to use a rubber or silicone gasket. This is a versatile and effective way to seal your container and protect its contents from water damage. Gaskets are available in a range of materials, including rubber and silicone, and can be purchased or made yourself.
If you want to buy a gasket, look for a plastic box with an embedded gasket in the lid. These are often clear plastic boxes with blue or red lids. Some recommended products include the Sterilite range, available at Target, and the Husky Professional Duty Waterproof Storage Container with a Hinged Lid, which has been praised for its durability and ability to keep contents dry, even in torrential storms.
If you're looking to create a DIY solution, you can purchase a silicone gasket maker to create your own seal. One method is to apply a flat layer of silicone and let it set, then add a second layer of silicone with Petroleum Jelly on top of the container's mailing edges. Close the lid so that the container's lip sits in the channel you've created, forming a watertight seal. This method has been used successfully by others to waterproof plastic containers for bulk storage.
Another option is to use liquid nails gasket material. Apply this to the lid of your plastic box and then use straps to lock it down. This method is recommended for kitchen boxes or storage of items that can handle getting a little wet, as it may not be completely waterproof if the box is flipped.
Rubber or silicone gaskets are a reliable way to waterproof your plastic box. Whether you choose to buy a pre-made gasket box or create your own gasket seal, you can be confident that your belongings will be protected from moisture and water damage.
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Seal with duct tape
Duct tape is a great option for waterproofing a plastic box. It is an inexpensive, quick, and easy way to ensure your belongings are protected from water damage.
Firstly, it is important to note that duct tape works best on non-porous surfaces, such as metal, plastic, vinyl, and glass. Plastic boxes are inherently water-resistant, but gaps around the lid or seams can allow water to enter. Duct tape can be used to seal these vulnerable points and enhance the box's overall resistance to moisture.
Before applying duct tape, ensure the surface is clean and dry. Measure the size, length, and depth of the box, and cut the duct tape to size, allowing for some overlap. Apply the tape to all outer sides of the box, ensuring each piece of tape covers a few centimetres of the vertical limits of the previous piece. This will create a strong seal, preventing water from entering.
For added protection, consider lining the inside of the box with a waterproof material, such as a plastic sheet or tarp, and securing it with duct tape. This acts as a secondary barrier.
Keep in mind that duct tape may be difficult to remove, so only seal the box if necessary, and be mindful of the potential hassle when removing it.
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Use a wet bag inside
One way to ensure the contents of a plastic box remain dry is to place a wet bag inside the box. Wet bags are waterproof zippered pouches that can be used to transport wet items such as swimwear, reusable period products, and diapers. They are typically made from Polyurethane Laminate (PUL), a polyester fabric with a thin, flexible, and waterproof plastic backing.
To make your own wet bag, you will need a yard of recycled canvas and a yard of PUL fabric, as well as a zipper. Cut two rectangles, one from each type of fabric, measuring 12” x 27” (69 cm x 30 cm). Cut an additional rectangle measuring 7” x 2” (6 cm x 18 cm) and two smaller rectangles measuring 1.5” x 3” (4 cm x 7.5 cm) from the canvas fabric. The two tiny fabric rectangles will serve as zipper ends.
If you are looking to purchase a pre-made wet bag, you can find them at various retailers and online stores. Wet bags are commonly used by campers and hikers to keep their gear dry. They are also useful for everyday activities such as storing wet swimsuits or gym clothes until they can be washed.
When using a wet bag inside a plastic box, ensure that the bag is large enough to fit all the items you want to keep dry. You may need to get a larger wet bag or use multiple bags depending on the size of your plastic box and the number of items you need to store. This method of waterproofing with a wet bag is simple and effective, allowing you to keep your belongings dry during various outdoor activities or when facing minor water exposure.
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Add a rubber strip to the lid
Adding a rubber strip to the lid of your plastic box is a great way to waterproof it. The crevice between the bin and the lid is the most vulnerable point of access on the bin, so by adding a rubber strip, you can enforce the seal and prevent leaks.
First, source a rubber strip that will fit along the edge of the lid where it meets the box. There are several different types of rubber strip materials to choose from, including closed-cell sponge rubber, EPDM closed-cell sponge rubber, silicone closed-cell sponge rubber, neoprene closed-cell sponge rubber, and blended closed-cell sponge rubber. Each type has its own unique advantages, so consider the specific needs of your project.
Next, attach the rubber strip to the lid. You can use an adhesive to glue the rubber strip in place, creating a tight seal when the lid is closed. Make sure to press the rubber strip firmly into place so that it adheres well.
You can further enhance the waterproofing of your plastic box by lining the inside with a waterproof material such as a plastic sheet or tarp. This acts as a secondary barrier in case any water does manage to seep through. Secure the liner to the sides of the box using waterproof tape.
Additionally, consider elevating the box by placing it on a pallet, bricks, or another type of platform. This helps to keep it off the ground and prevents direct contact with any water that might accumulate on the floor during heavy rains or flooding.
By following these steps and regularly checking your plastic box for any signs of wear, damage, or leaks, you can effectively waterproof it and protect your belongings from moisture and water damage.
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Use a plastic bin with a gasket lid
If you're looking for a plastic box that is waterproof, consider purchasing a plastic bin with a gasket lid. Gasket lids are designed to prevent water from entering the bin, making them ideal for storing items that need to stay dry.
One option for a plastic bin with a gasket lid is the Sterilite brand, which offers a range of sizes, including 20-quart and 45-quart options. These bins are stackable and have latching lids, making them perfect for efficient storage and organization. You can find Sterilite products at Target, with some bins featuring clear plastic and blue gaskets.
Another recommended product is the Husky Professional Duty Waterproof Storage Container with a Hinged Lid in Red. This bin has an embedded gasket and has proven to keep items dry even in the back of a pickup truck during torrential storms. It is available at Home Creapo and is an affordable option for those seeking dry storage.
For those seeking a more heavy-duty option, the IRIS Remington Weather Tight Store-It-All Storage Bin in Black is a sturdy choice. Its gasket is known to be splash-proof and durable, withstanding multiple multi-day and overnight trips. This bin also doubles as a bench, providing additional functionality.
When using plastic bins with gasket lids, it is important to note that they may not be completely waterproof if flipped over. To enhance water protection, consider using straps or bungee cords to secure the lid tightly. Additionally, packing items in garbage bags within the bin can provide an extra layer of protection from moisture.
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Frequently asked questions
The crevice between the bin and the lid is the most vulnerable point of access for water. To prevent water from seeping in, consider adding a rubber strip to the top of the bin where the lid attaches. These strips have adhesive backings and are easy to install.
Another way to waterproof your plastic box is to use silicone caulk. However, this method may not work well if the caulk does not stick to the box or lid.
Yes, there are many pre-made waterproof boxes available for purchase. For example, the "12-Gal. Professional Heavy Duty Waterproof Stackable Plastic Storage Container with Hinged Lid in Red" from Home Depot is a cost-effective option at $28.
It is important to consider the protective requirements of your specific application. For example, outdoor outlets have different needs from electronics on a factory floor. Familiarize yourself with the NEMA and IP rating scales to understand the level of protection your box needs.
Waterproof boxes can provide protection from water damage and condensation buildup. They can also guard sensitive electronic equipment and protect against other environmental hazards such as dust, corrosion, and submersion.
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