Do Zojirushi insulated drink tumblers have PFAS?
Zojirushi insulated drink tumblers average 78 out of 100 on PFAS Authority's PFAS and toxin screen across the 16 Zojirushi insulated drink tumblers graded as of October 2026, above the 72 out of 100 median for the 26 other insulated drink tumblers brands graded alongside it.
Zojirushi insulated drink tumblers average Excellent on our four-band scale. 16 of the 16 we graded are worth buying. That is above 87% of the insulated drink tumblers brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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What Zojirushi says and does about PFAS
Zojirushi is unusually direct about its own chemistry. It says the nonstick coating on its rice cooker inner pans, water boiler liners and breadmaker pans is made using PTFE, which is a PFAS, and that its uncoated SlickSteel stainless finish exists for customers who prefer to avoid PTFE. Its absence claim is PFOA-free, the narrower claim, and one rice cooker model, the Micom NS-TPC, is the only product we found with a PFAS-free claim, limited to food-contact surfaces.
- Brand statementZojirushi says its nonstick coating is made using PTFE, or polytetrafluoroethylene, applied as a primer and a topcoat. PTFE is a fluoropolymer and therefore a PFAS. Zojirushi America ↗
- Brand statementZojirushi says its SlickSteel interior finish was introduced for customers who prefer to avoid PTFE nonstick, which is the uncoated stainless alternative used in mugs, bottles and food jars. Zojirushi America ↗
- Brand statementAnswering customers on its own blog, Zojirushi says the nonstick coating is made of PTFE and is PFOA free. PFOA free is a claim about one compound, not about PFAS as a class. Zojirushi America ↗
- MaterialsZojirushi cites FDA regulation 21 CFR 177.1550, the rule covering perfluorocarbon resins, as the basis for its coatings being safe for food contact. That is a compliance statement, not a statement that no PFAS is present. Zojirushi America ↗
- Brand statementFor one model family, the Micom Rice Cooker and Warmer NS-TPC, Zojirushi says all surfaces that come into contact with food or beverages are free of PFAS including PTFE and PFOA. That claim is scoped to that model and to food-contact surfaces. Zojirushi America ↗
Sources checked October 1, 2026. A brand statement is the company’s own claim, which we report but have not verified. Our grades are model-based estimates, not lab tests.
Zojirushi insulated drink tumblers worth buying Good or better, best-graded first
- Stainless steel body, no nonstick or special coating mentioned
- Seal and gasket degradation. Rubber or silicone seals in the lid can degrade with age and exposure to hot…
- Stainless steel construction, no Teflon-family coating
- Silicone gasket degradation. The rubber or silicone seals on the lid may absorb odors or develop microbial…
2 hazards checked on this product, all on its full breakdown.
- stainless steel with silicone lid gasket
- Silicone gasket degradation and off-gassing. Silicone gaskets can degrade over years of thermal cycling and…
3 hazards checked on this product, all on its full breakdown.
- stainless steel interior, plastic lid
- Plastic lid and seal degradation. Polypropylene and elastomer seals are not specified by Zojirushi in most…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel interior and exterior, lid with handle
- Lid and gasket material degradation (polypropylene/polyacetal/silicone). Plastic lid components and silicone…
3 hazards checked on this product, all on its full breakdown.
- stainless steel with standard plastic lid
- BPA & bisphenols. Zojirushi does not publicly specify lid polymer type or disclose BPA/BPS testing. Standard…
3 hazards checked on this product, all on its full breakdown.
- stainless steel, no coating specified
- Nickel leaching (from stainless steel alloy). Stainless steel 18/8 contains 8% nickel. Leaching is minimal…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel interior, plastic exterior
- Stainless steel interior corrosion or nickel release. High-quality 18/8 stainless is highly resistant to…
3 hazards checked on this product, all on its full breakdown.
- stainless steel bottle, no interior coating disclosed
- Gasket and cap material degradation. Silicone gaskets and plastic cap components can degrade over time…
3 hazards checked on this product, all on its full breakdown.
- stainless steel interior and exterior
- Polymer lid and gasket degradation. Plastic lid components and rubber gaskets may degrade with repeated…
2 hazards checked on this product, all on its full breakdown.
- stainless steel body, no reported coating
- Seal/gasket degradation and microbial growth. Stainless steel tumblers typically use silicone or rubber seals…
2 hazards checked on this product, all on its full breakdown.
- stainless steel exterior, vacuum insulation, plastic interior liner
- Plastic interior liner composition and leaching. Zojirushi does not publicly identify the specific polymer or…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel with vacuum insulation
- Stainless steel corrosion and nickel leaching. Low-quality stainless steel or damage to the surface can…
3 hazards checked on this product, all on its full breakdown.
- stainless steel body, glass or plastic inner walls
- Plastic liner degradation (if applicable). Some regional versions use food-grade plastic (likely PP or…
2 hazards checked on this product, all on its full breakdown.
- stainless steel body, plastic lid and interior coating
- Interior polymer coating degradation. The epoxy or polyester interior coating can chip or peel with thermal…
3 hazards checked on this product, all on its full breakdown.
- Stainless steel tumbler body, plastic pop-up straw
- Plastic straw degradation and microplastic release. The pop-up straw is the only plastic component in direct…
3 hazards checked on this product, all on its full breakdown.
Better insulated drink tumblers from other brands
Graded higher than the Zojirushi average of 78.
- Stainless steel bottle, stainless steel cap
- The brand calls it PFAS-free, which we have not verified
- Powder-coat cap degradation over time
3 hazards checked on this product, all on its full breakdown.
- Stainless steel body, powder-coat finish
- The brand calls it PFAS-free, which we have not verified
- Powder-coat finish degradation
3 hazards checked on this product, all on its full breakdown.
- Stainless steel bottle, plastic cap and silicone gasket
- The brand calls it PFAS-free, which we have not verified
- Silicone gasket degradation and leaching
3 hazards checked on this product, all on its full breakdown.
The same question, asked of the other insulated drink tumblers brands
Best average grade first. Zojirushi averages 78.
See every Zojirushi product we grade on the Zojirushi brand page, or the full insulated drink tumblers ranking.