Stainless King Review, Is Stainless King Non-Toxic?
The verdict
Stainless King averages 70 out of 100 on PFAS Authority's PFAS and toxin screen across the single Stainless King product graded as of October 2026, which reaches its 70 point pass mark.
Free to quote with attribution to PFAS Authority and a link to pfasauthority.com/brands/stainless-king.
Stainless King grades Good on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
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.
Worth buying from Stainless King Good or better, best-graded first
Stainless King
Thermos 47oz Stainless King Vacuum Insulated Food Jar
70GoodPFAS grade
✓stainless steel interior, vacuum-sealed, no disclosed coating
⚠We found no PFAS statement from the brand
⚠Elastomer and plastic gasket degradation, Silicone or rubber gaskets in the lid and seal can soften…
Stainless King averages 70 out of 100 on PFAS Authority's PFAS and toxin screen across the single Stainless King product graded as of October 2026, which reaches its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
Is Stainless King non-toxic?
Thermos 47oz Stainless King Vacuum Insulated Food Jar is the highest-graded Stainless King product we have scored, at 70/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
Which Stainless King products are lower concern for PFAS?
The highest-graded Stainless King products we have scored are Thermos 47oz Stainless King Vacuum Insulated Food Jar. That is our model-based estimate from materials and public disclosure, not a lab test.
