GoPro · Waterproof Camera & Lens Protection Cases
K&F Concept 4-in-1 Filter Kit for GoPro HERO9/10/11
Glass optics rarely contain PFAS.
K&F Concept's filter kit uses glass optics typical in camera filters and needs no Teflon-family coating coatings. No PFAS claims or evidence of risky treatments appear.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Glass optical filters, metal frames, rubber gaskets
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What K&F Concept 4-in-1 Filter Kit HERO9/10/11 is made of, ingredients and materials
K&F Concept filter kits use optically coated glass elements mounted in anodized aluminum or brass frames with rubber gaskets for sealing. Glass optical coatings (anti-reflective, UV, ND) are inert once cured and do not leach into food, water, or skin. Rubber gaskets are typically synthetic elastomer (EPDM or silicone) chosen for UV and salt resistance in outdoor use, not for ingestion contact, so standard plasticizer leaching concerns are minimal in this application.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Rubber gasket degradation
Synthetic rubber gaskets can harden or crack over years of UV and salt exposure, compromising water-tight seals; this is a functional failure, not a toxicological hazard, but replacement is recommended when observed.
Anodized aluminum frame corrosion
Anodizing protects aluminum but can pit or flake if scratched and exposed to salt or acidic conditions; compromised anodizing may accelerate corrosion but does not release significant aluminum into water or the camera body over typical use windows.
Glass breakage and sharp edges
Optical glass is brittle; drops or impacts can shatter the filter element, creating sharp edges and glass particles. This is a mechanical injury risk, not chemical, and is common to all glass filters; care during use and storage mitigates this.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Optical coating composition (refractive layers)
Anti-reflective and specialty coatings on camera filter glass (typically magnesium fluoride, silica, or tantalum oxide) are stable, non-leaching compounds. No ingestion or skin contact exposure pathway exists.
Heavy metals
Optical coatings and anodized aluminum frames do not typically contain lead, cadmium, or other regulated heavy metals; no testing or recalls have flagged this for camera filter kits.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
K&F Concept is a third-party accessory maker, not the GoPro brand. K&F publishes minimal safety documentation beyond product specifications; no recalls, certifications (ISO, CE), or public safety controversies are on record for this filter line. GoPro itself has not flagged safety concerns with third-party optical accessories. No formal PFAS disclosure exists from K&F, consistent with silence across most camera accessory brands.
How it compares in its category
Optical filter kits are among the lowest-risk camera accessories because they are passive, non-electronic, and never contact skin, food, or drinking water. Third-party branded sets (K&F, Neewer, etc.) are chemically equivalent to OEM filters; cost difference reflects manufacturing overhead and warranty, not safety margin. GoPro's own filter packs would carry identical material hazards.
If you buy it
Store filters in a dust-free case or pouch to avoid glass scratches that degrade optical performance; do not use abrasive cloths to clean glass surfaces. Rinse gaskets with fresh water after saltwater use to prevent rubber degradation and salt corrosion of metal frames. Replace gaskets if they become stiff, cracked, or no longer seal reliably. The product has no temperature or humidity limits relevant to normal use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- GoPro has made none
Formulations change between production runs, so check the current label. How we grade.
More waterproof camera & lens protection cases 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.