Does Zojirushi insulated drink tumblers have PFAS?
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.
We graded 8 Zojirushi insulated drink tumblers products, averaging Excellent (93/100). 8 of them grade Good or better.
Zojirushi insulated drink tumblers worth buying 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
See every Zojirushi product we grade on the Zojirushi brand page, or the full insulated drink tumblers ranking.