Is Silicone Safe for Food Storage? What to Know Before You Buy

By Better Human Goods
2 min read

Silicone shows up everywhere in modern kitchens — collapsible bowls, bento boxes, water bottles, baking mats, storage lids. It's flexible, it seals well, and it doesn't shatter. But it also looks and feels a bit like plastic, which leaves a lot of people asking a fair question: is food-grade silicone actually safe to store and carry food in?

What food-grade silicone is

Silicone is made primarily from silicon — an element derived from sand — bonded with oxygen. The result is a rubber-like material that's very different from petroleum-based plastics. Food-grade silicone is non-reactive, meaning it doesn't readily interact with the food it touches, and it tolerates a wide temperature range without becoming brittle or melting.

Why people choose it over plastic

  • No BPA, phthalates, or common plastic softeners — pure food-grade silicone doesn't rely on the additives that make people wary of plastic.
  • Non-porous surface — it resists odors and stains better than soft plastic.
  • Durability — it flexes instead of cracking, so it lasts through years of folding, sealing, and washing.
  • Temperature tolerance — it handles cold and heat without degrading the way thin plastics do.

The one thing to check: fillers

Not all silicone is equal. Cheaper products sometimes blend in plastic fillers to cut costs, which defeats the purpose. A simple at-home check: pinch and twist a flat section. Pure silicone stays its original color; filled silicone often shows a white streak where it's stretched. The better move, though, is to buy from a brand that's explicit about using 100% food-grade silicone with no fillers.

Silicone vs. steel — which when?

Steel is the pick when you want something rigid, scrubbable, and effectively permanent. Silicone wins when you want flexibility, a tight seal, or something collapsible that packs down small. Most clean kitchens use both, matched to the job.

The bottom line

Pure, food-grade silicone with no fillers is a genuinely clean choice for food storage — free of the plastic additives that worry people, and built to last. The only real risk is buying cheap, filler-blended versions, which is exactly why sourcing matters.

Every silicone item in the Steely collection is held to that standard: 100% food-grade silicone, no cheap plastics, no fillers. See the Steely lineup →

Keep reading: Stainless steel vs. plastic food containers →