Zojirushi Review, Is Zojirushi Non-Toxic?
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.
Across 12 graded products, Zojirushi averages Excellent (87/100). On disclosure, the brand says nothing publicly about PFAS. 12 of its products grade Good or better. Grades are model-based estimates, not lab results.
Does Zojirushi have PFAS, by category
Worth buying from Zojirushi Good or better, safest first
Zojirushi
Stainless Steel Carry Tumbler
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 liquids…
Lower PFAS concern; bare stainless steel drink container.
✓Bare metal or glass, no coating at all
Zojirushi
27oz Stainless Steel Tumbler
stainless steel with standard plastic lid
BPA & bisphenols
Zojirushi does not publicly specify lid polymer type or disclose BPA/BPS testing.…
Lid degradation and microplastic release
Plastic lids degrade over time with repeated thermal cycles and UV exposure. Visible…
Seal material contamination or mold growth
Rubber or silicone gaskets in the lid seal area can harbor bacteria and mold if not…
Lower concern; stainless steel core rarely contains PFAS.
✓Bare metal or glass, no coating at all
Zojirushi
Stainless Tumbler
stainless steel body, no reported coating
Seal/gasket degradation and microbial growth
Stainless steel tumblers typically use silicone or rubber seals that can degrade over…
Nickel sensitivity or leaching
Stainless steel contains nickel (typically 8-10% in 18/8 alloy). For individuals with…
Lower concern; stainless steel tumbler has no known PFAS-prone coatings.
✓Bare metal or glass, no coating at all
Zojirushi
Stainless Vacuum Insulated Tumbler
stainless steel exterior, vacuum insulation, plastic interior liner
Plastic interior liner composition and leaching
Zojirushi does not publicly identify the specific polymer or additives in the inner…
Bacterial or mold growth in sealed compartments
Any double-wall vacuum tumbler carries risk of microbial growth if the interior or seal…
Lid gasket degradation and replacement availability
Over time, rubber gaskets in the lid may degrade, crack, or harbor bacteria. Zojirushi…
Lower concern; bare stainless steel minimizes PFAS risk.
✓Bare metal or glass, no coating at all
Zojirushi
34 oz. Stainless Mug with Lid Handle
stainless steel with silicone lid gasket
Silicone gasket degradation and off-gassing
Silicone gaskets can degrade over years of thermal cycling and exposure to hot liquids…
Microbial growth (mold, bacteria) in gasket seams
Silicone gaskets in tumbler lids are moisture traps if not dried thoroughly. Inadequate…
Lid latch or handle durability
Over time, the silicone lid seal and handle attachment points can wear or crack from…
Lower concern; stainless steel and silicone lack inherent PFAS.
✓Bare metal or glass, no coating at all
Zojirushi
Stainless Tumbler SX-HA89H-AM
Stainless steel construction, no Teflon-family coating
Silicone gasket degradation
The rubber or silicone seals on the lid may absorb odors or develop microbial growth if…
Plastic lid or handle components
If the lid or external components contain polycarbonate or other thermoplastic polymers…
Stainless steel tumbler carries lower PFAS concern, no coating.
✓Bare metal or glass, no coating at all
Zojirushi
Stainless Carry Tumbler with Pop-up Straw
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 contact with beverages. Repeated…
Gasket and seal leachables
Silicone or elastomer gaskets in the lid may release trace organic compounds if exposed…
Bacterial growth in straw mechanism
Pop-up straws have crevices and joints that can trap moisture and food residue if not…
Lower concern; stainless steel and standard plastics unlikely PFAS sources.
⚠Brand says nothing about PFAS
Zojirushi
SX- SX-FSE45AD Stainless Vacuum Insulated Tumbler
stainless steel body, glass or plastic inner walls
Plastic liner degradation (if applicable)
Some regional versions use food-grade plastic (likely PP or copolyester) instead of…
Rubber/silicone seal breakdown
Lids contain elastomer gaskets that can absorb odors, harbor bacteria if not cleaned…
Lower concern; no nonstick or water-resistant coatings present.
⚠Brand says nothing about PFAS
Zojirushi
Ms. Bento Stainless Lunch Jar
Stainless steel body, polypropylene seals/lids
Polypropylene seal degradation under heat
PP seals and gaskets can soften, warp, or degrade if exposed to temperatures above 70C…
Microplastic generation from seal wear
Repeated opening/closing and UV exposure can cause microscopic wear particles to shed…
Lower concern. Stainless steel container with standard plastic closures.
⚠Risky category by default
Zojirushi
SL-XE20AD Classic Stainless Lunch Jar
Stainless steel interior and exterior, no nonstick or waterproof coatings
Nickel leaching from stainless steel
18/8 stainless steel releases trace nickel in contact with acidic or salty foods. Risk is…
Seal/gasket degradation and mold growth
The rubber or silicone gasket that seals the lid can degrade, crack, or harbor…
Lower PFAS concern. Bare stainless steel lunch jar, no coatings.
⚠Risky category by default
Zojirushi
Classic Bento Lunch Jar
stainless steel, silicone gasket
Silicone gasket degradation
Silicone elastomers can harden, crack, or lose seal integrity over time, particularly…
Bacterial or mold growth in gasket groove
The silicone gasket channel can trap food residue and moisture if not thoroughly cleaned…
Lower concern. Stainless steel bento jar, no known PFAS coatings.
⚠Risky category by default
Zojirushi
Ms. Bento Lunch Jar
Stainless steel food container with silicone seals
Silicone seal degradation over time
Silicone gaskets can stiffen, crack, or lose elasticity after repeated thermal cycling…
Bacterial colonization in gasket grooves
Silicone seals have microscopic ridges where food debris and moisture can accumulate if…
Lower concern. Stainless steel container unlikely to contain PFAS.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →