Pyrex · Silicone Cutting Mats & Prep Boards
Silicone Mat Non-Slip Resin Casting Crafts Pad Sheets Protector
Silicone mat has lower PFAS concern; verify seller authenticity first.
Silicone is inherently PFAS-free. No nonstick coating or waterproof treatment typical for this product type. Verify Pyrex branding authenticity, as off-brand sellers misuse the name.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
silicone mat, no coating disclosed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
cookware is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This product is a silicone mat, a polymer of silicon and oxygen that does not contain the ceramic glazes, enamels, or non-stick coatings typical of traditional cookware hazards. Silicone mats are non-porous and do not leach metals like lead, cadmium, or aluminum under normal temperatures. The main concern is material purity: lower-grade silicone can contain residual volatile compounds or contaminants from manufacturing, though food-grade silicone used by reputable makers is relatively stable.
The brand's record and disclosure
Pyrex is well-known for borosilicate glass cookware, not silicone products. This mat listing under the Pyrex brand is unusual and raises authenticity questions. Pyrex has no published safety certifications or disclosure statements specific to silicone mats. Counterfeit or third-party Pyrex-branded silicone mats are common on online marketplaces; verify the seller is an authorized Pyrex distributor before purchase.
How it compares in its category
Silicone mats are safer than traditional non-stick cookware coated with Teflon-type coating or ceramic glazes that may contain heavy metals. They avoid aluminum and Teflon-type coating fume risks entirely. However, the broader cookware category rarely includes silicone mats; this product is marketed for resin casting and crafts, not food preparation, which suggests it may not meet food-contact standards.
If you buy it
Do not use for food cooking or storage if the product explicitly states it is for crafts only. If using for food, confirm food-grade certification from the seller. Clean before first use with warm soapy water. Keep below 400 degrees Fahrenheit to avoid silicone degradation. Inspect regularly for tears, discoloration, or odor changes, which signal replacement. Avoid prolonged contact with strong solvents.
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.”
Silicone degradation and leaching (non-toxic but physical)
Lower-grade silicone can shed microscopic particles or off-gas volatile organic compounds when heated repeatedly or exposed to high temperatures. Food-grade silicone is far more stable, but product certifications are absent in this listing.
Contamination from manufacturing residues
Silicone mats sourced from unregulated manufacturers may retain solvents or catalysts used during polymerization. No third-party testing or FDA registration is visible for this product.
Counterfeit product risk
Pyrex-branded silicone mats sold through unauthorized channels frequently turn out to be non-Pyrex rebranded goods with undisclosed material sourcing. Verify seller authenticity to minimize exposure to unknown manufacturing standards.
Lead or cadmium in colorants (if mat is pigmented)
Silicone itself does not contain these metals, but colored silicone mats may use pigments with heavy-metal contaminants if produced outside regulated regions. No information on this product's pigmentation is disclosed.
Coating degradation (non-applicable here)
Silicone mats have no applied coating layer, so peeling, flaking, or corrosion typical of enameled or glazed cookware is not a concern. The silicone body itself is the functional surface.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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 Silicone Cutting Mats & Prep Boards
Silikomart
Silicone Grip Mat
silicone rubber grip mat, non-coated
Lower concern. Silicone grip mats rarely contain PFAS.
⚠Risky category by default
Pyrex
Rockler Silicone Project Mat
silicone
Silicone project mat carries lower PFAS concern.
⚠Risky category by default
Pyrex
1, Size: 29cm/11.42 x 26cm/10.24 (Approx.)40cm/15.75 x 30cm/11.81 (Approx.)50cm/19.69 x 40cm/15.75 (Approx.)60cm/23.62 x
borosilicate glass
Lower concern. Pyrex glass cookware is borosilicate, inherently PFAS-free.
⚠Risky category by default
More silicone cutting mats & prep boards 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.