Pyrex · Bundt Pans
PYREX France - Bundt Pan/ Aspic Mold
Lower PFAS concern, borosilicate glass cookware carries minimal risk.
Pyrex's classic Bundt pan and aspic mold are made from borosilicate glass, a non-coated material with no inherent PFAS risk. Glass cookware does not require non-stick or water-resistant treatments and is not known to harbor PFAS. Pyrex makes no PFAS claims, but the material itself mitigates concern.
Shop Pyrex on Amazon →Material
borosilicate glass
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cookware is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
This Pyrex Bundt pan is borosilicate glass, a silica-based material fused with boron oxide that creates an extremely stable, nonporous surface. Borosilicate glass does not leach metals, off-gas compounds, or degrade into microplastics under normal cooking use. The material is chemically inert across the temperature range typical for baking (up to roughly 500°F depending on the pan's rated limit), making it one of the safest bakeware substrates available.
The brand's record and disclosure
Pyrex (now owned by Instant Brands) has a long-established reputation for glass cookware safety and maintains manufacturing standards across its product lines. The brand does not publicly disclose detailed PFAS testing data, which is common across the cookware industry; however, borosilicate glass products inherently do not require PFAS-based non-stick coatings or surface treatments. No significant safety recalls or contamination incidents have been documented for Pyrex glass bakeware in recent years.
How it compares in its category
Glass Bundt pans are significantly safer than coated metal alternatives (which may use Teflon-type coating non-stick coatings, silicone polymers, or ceramic glazes that can degrade over time). Unlike ceramic-coated steel or aluminum pans, borosilicate glass avoids risks of lead in glazes, aluminum leaching, or coating failure. Glass is heavier and slower to heat than metal, but offers superior longevity and no coating replacement concerns.
If you buy it
Handle with care to avoid thermal shock: do not move it directly from a hot oven to a cold surface or expose it to rapid temperature changes, as borosilicate glass can crack. Check the manufacturer's maximum temperature rating (typically 400-500°F) and verify it matches your intended use. No special seasoning, coating maintenance, or replacement is needed; wash normally. Store upright or padded to prevent impact damage, but the pan itself will not degrade chemically over time.
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.”
Thermal shock and breakage
Borosilicate glass is durable but susceptible to cracking if exposed to rapid temperature changes (hot pan to cold surface). Not a chemical hazard, but breakage can produce sharp fragments.
Lead or cadmium in glazes or coatings
Borosilicate glass has no glaze or enamel layer; it is solid glass throughout. No evidence of lead or cadmium contamination in Pyrex glass bakeware on record.
Leaching of metals or compounds
Borosilicate glass is chemically inert and does not leach aluminum, barium, or other metals. No documented leaching incidents for this product type.
Coating degradation or shedding
This product has no non-stick or protective coating; it is solid borosilicate glass, so coating failure is not a concern.
Off-gassing or volatile organic compounds
Borosilicate glass does not release VOCs or off-gas at typical baking temperatures. No odor or fume risk is associated with this material.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 92% 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 Bundt Pans
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ceramic nonstick coating
Lower-concern option; ceramic nonstick avoids traditional Teflon-type coating/PFAS, though independently verify if important.
⚠Risky category by default
Caraway
Ceramic Nonstick Fluted Cake Pan
Ceramic nonstick coating
Lower-concern ceramic nonstick option backed by brand transparency and third-party certification.
⚠Risky category by default
Caraway
Nonstick Ceramic Square Baking Pan in Sage at Nordstrom
ceramic nonstick coating
Lower-concern option; ceramic nonstick avoids Teflon-family coating, and brand transparency supports the claim.
⚠Risky category by default
More bundt pans 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.