OXO · Food Storage Containers
OXO Good Grips Prep & Go Leakproof Containers
Lower concern for typical food-storage use; no confirmed PFAS risk signals, but OXO has not publicly disclosed PFAS policy.
OXO Good Grips Prep & Go containers are polypropylene-based food storage with silicone seals, materials not inherently associated with intentional PFAS use. The brand has not issued public PFAS-free claims or third-party certifications.
Shop OXO on Amazon →Material
Plastic (polypropylene) container with silicone gasket seal
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
The container body is polypropylene (PP, #5 plastic), a thermoplastic chosen for food contact because it does not leach BPA, BPS, or phthalates under normal storage conditions. The silicone gasket is inert and does not release volatile compounds at room temperature or during cold/mild warm storage. Polypropylene has a melting point around 130-150°C; at room temperature and refrigerator storage, no degradation or monomer migration is expected. The material is FDA-listed for food contact and is one of the safer commodity plastics for food storage.
The brand's record and disclosure
OXO has not published a PFAS-free declaration or detailed chemical disclosure for this product line. The brand has a strong reputation for consumer safety focus and product recalls when needed, but does not lead on transparency around PFAS "forever chemicals" in their plastics portfolio. No major recalls or safety incidents have been documented for OXO food-storage containers. The silicone gasket source and manufacturing standards are not independently verified in public records.
How it compares in its category
Polypropylene containers are industry standard and safer than older polycarbonate (#7) or PVC (#3) alternatives because they avoid BPA and phthalates. Glass containers offer zero plastic leaching risk but are heavier and break. Stainless steel with silicone seals (e.g., ECOlunchbox) avoid plastic entirely but are costlier. OXO's design and material choice place it in the mainstream middle: good ergonomics and affordability with acceptable chemical safety for the price point.
If you buy it
Store room-temperature and refrigerated foods only; do not microwave or expose to hot liquids above 65°C, as PP softens and gaskets may degrade over time. Replace the silicone gasket every 1-2 years if it becomes discolored, cracked, or loses seal elasticity. Wash by hand or on gentle dishwasher cycles to extend gasket life. Avoid prolonged contact with fatty foods (oils, butters, nuts) at warm temperatures, as they can accelerate minor plasticizer migration, though polypropylene's risk is very low compared to other plastics.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
BPA/BPS and phthalates in plastic
Polypropylene does not contain bisphenol A, bisphenol S, or phthalate plasticizers by chemistry. No reports of BPA or phthalate leaching from OXO PP containers. Risk is negligible for this material type.
Microplastics from degradation when heated
Polypropylene can soften and micro-fragment if microwaved or exposed to sustained heat above its glass transition temperature. Normal refrigerated and room-temperature storage does not trigger this. Users who misuse containers for hot liquids increase fragmentation risk; gasket degradation can also shed small silicone particles over years.
Silicone gasket leachables
Food-grade silicone does not leach oligomers or toxic additives under normal storage conditions. No reports of contamination from OXO silicone seals. Long-term exposure to heat or solvents can cause minor leaching, but this is not a concern in cold/room-temperature food storage.
Coating or adhesive degradation over time
Silicone gaskets can lose seal integrity and become discolored after 1-3 years of use, especially if dishwashed frequently or exposed to oils. This is a functional failure (leakage) rather than a chemical hazard, but replacement gaskets may not always be available or affordable. No evidence of toxic off-gassing from degraded gaskets in normal use.
Mold or bacterial growth in gasket seals
Silicone gaskets are prone to harboring bacteria and mold if not dried thoroughly or if food residue is trapped in the seal groove. This is a hygiene risk, not a chemical toxicity risk, but it can compromise food safety. Regular inspection and thorough cleaning are necessary preventive steps.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Food Storage Containers
Caraway
Food Storage Set
Glass containers with plastic lids
Lower concern; glass + plastic lids with stated PFAS-free position, but no third-party verification of lid material.
⚠Risky category by default
Caraway
Home 9-Piece Mini Food Storage Set
Borosilicate glass containers with plastic lids
Lower-concern option; glass containers avoid PFAS coatings, but verify lid material before purchase.
⚠Risky category by default
Caraway
Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
Lower PFAS concern, glass container with stated non-PFAS lid, though third-party verification absent.
⚠Risky category by default
More food storage containers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.