The 55‑gallon drum is ubiquitous in industry. From storing crude oil to transporting cleaning compounds, food ingredients and flavor concentrates, this iconic container is the backbone of bulk shipping and storage. But not all drums are created equal, and choosing the wrong type can lead to spills, contamination or compliance issues. Whether you’re new to industrial packaging or looking to refine your logistics strategy, this guide will walk you through the dimensions, materials, applications and regulatory considerations of the 55‑gallon drum.
What Exactly Is a 55‑Gallon Drum?
A standard 55‑gallon drum is a cylindrical container designed to hold approximately 55 U.S. gallons (about 208 liters) of liquid or granular solids. A typical steel 55‑gallon drum measures about 33.5 inches (85 cm) tall with a diameter of 22.5 inches (57 cm). Its capacity allows shippers to efficiently transport significant quantities of material while still being manageable with a forklift or drum dolly.
There are two basic styles:
- Tight‑head (Closed Head) Drums – These have a sealed top with two smaller threaded openings (bungs). They’re primarily used for liquids because they provide a secure seal against leaks and evaporation.
- Open‑head Drums – These have a removable lid secured by a clamp ring. They’re better suited for viscous liquids, powders, solids or materials that need easy access for filling or dispensing.
Materials: Steel, Plastic, Fiber and More
While the size is standard, the material can vary dramatically. The three most common are:
Steel Drums
Steel drums dominate hazardous materials and heavy-duty industrial applications. They’re strong, resist internal pressure and can be lined with epoxy or phenolic coatings to resist corrosion. Steel drums are often UN rated for hazardous contents and come in carbon steel or stainless steel (the latter for food and pharma applications).
Plastic Drums
Plastic 55‑gallon drums are made from high-density polyethylene (HDPE). They’re lighter than steel, resist many chemicals and won’t rust. Plastic drums are commonly used in food, beverage and pharmaceutical industries for non-hazardous and medium-hazard materials. They’re available in tight‑head and open‑head designs and can also be UN rated for certain hazard classes.
Fiber Drums
Fiber or cardboard drums consist of multiple layers of fiberboard. They’re inexpensive, lightweight and fully recyclable. Fiber drums often store dry goods like powders, grains or non-hazardous chemicals. They’re not suited for liquids unless they have a moisture barrier lining.
Other materials (e.g., stainless steel, composite drums combining plastic and metal) serve niche applications. Stainless steel drums, although costly, offer unmatched purity and corrosion resistance.
Applications: Where Do You Use Them?
A 55‑gallon drum’s versatility makes it suitable for a wide range of industries. Common uses include:
- Chemicals and Solvents – Acids, bases, adhesives, lubricants and cleaning agents.
- Food and Beverage – Flavor concentrates, syrups, edible oils, fermenting ingredients and citrus products.
- Pharmaceuticals – Raw materials, intermediates and finished ingredients requiring clean, FDA-compliant packaging.
- Petroleum – Crude oil, fuels, lubricating oils and asphalt.
- Waste Management – Contaminated waste, contaminated soils, spill containment or solids requiring safe disposal.
- Agriculture – Fertilizers, pesticides and animal feed supplements.
Regulatory Considerations
Not all 55‑gallon drums meet the same standards. If you’re shipping hazardous materials, the drum must be UN rated for the specific hazard class. The markings on the drum indicate its approval for certain packaging groups (I, II or III) and maximum specific gravity. In the U.S., the DOT (Department of Transportation) regulations align with UN standards in Title 49 CFR. It’s critical to choose the correct combination of drum style, material, liner, closure and rating to ensure compliance.
For food and pharmaceutical applications, containers must meet FDA guidelines for materials that contact consumables. Stainless steel drums or food-grade HDPE drums are often the right choice.
Handling and Storage Tips
- Use Proper Equipment – Utilize drum dollies, forklift attachments or pallet jacks to move drums safely. Avoid rolling drums on the rim, which can damage the chime and compromise integrity.
- Stacking – While steel drums can be stacked three or more high when filled, plastic drums often have stacking limitations. Follow the manufacturer’s guidelines and ensure even weight distribution.
- Ventilation – When filling or dispensing volatile liquids, venting prevents a vacuum or pressure build-up. Always use the correct vent plugs and closures.
- Temperature Control – Protect drums from extreme heat or cold. UV light can degrade plastic over time, and freezing may crack some materials.
- Reuse and Reconditioning – Many 55‑gallon drums can be reconditioned. After thorough cleaning, inspection and recertification, they can be reused, saving costs and reducing waste.
Our Offering
Pack It Right stocks 55‑gallon drums in steel, plastic and stainless steel, with a variety of linings and fitting options. We provide UN rated drums for hazardous contents and FDA-compliant drums for food and pharmaceutical products. We also carry drum accessories such as pumps, vents, heaters and spill containment solutions, ensuring safe handling from storage to transport.
FAQs
Q: What’s the difference between 55‑gallon steel and plastic drums?
A: Steel drums offer greater strength and temperature resistance, making them suitable for hazardous chemicals and hot fills. Plastic drums are lighter, rust-resistant and more cost-effective for non-corrosive liquids.
Q: Can I stack filled 55‑gallon drums?
A: Yes, but follow manufacturer guidelines. Steel drums can often be stacked higher than plastic. Ensure the bottom drum is rated for the weight and use pallets for stability.
Q: Are used drums safe?
A: Reconditioned drums must be cleaned, inspected and re-certified. Never reuse a drum that previously contained incompatible materials, and always confirm that it meets UN or FDA standards for its new purpose.
Q: Do 55‑gallon drums have to be grounded?
A: When filling or dispensing flammable liquids, it’s important to ground and bond metal drums to prevent static discharge. Plastic drums must be fitted with grounding systems designed for non-conductive surfaces.
Request a Quote
Understanding your container needs doesn’t have to be complex. From tight‑head steel drums to open‑head plastic drums with screw lids, Pack It Right offers the right container for every application. Let our specialists help you choose the appropriate material, lining, fittings and regulatory certification. Request a Quote today and ensure your products are stored and shipped safely.
