Stren · Fishing Line & Fishing Tackle
CLEARANCE - Stren Original Monofilament Line (300 yd)
Lower concern. Standard nylon fishing line with no known PFAS use.
Stren Original is standard monofilament nylon line without known Teflon-family coating coatings or water treatments requiring PFAS. No brand disclosure on PFAS, but material type suggests lower risk than specialized coated products.
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Monofilament nylon fishing line
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
other 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
Stren Original is extruded nylon monofilament, a single continuous polymer strand used as fishing line. Nylon (polyamide 6 or 66) is a saturated hydrocarbon polymer with no known intentional additives in typical fishing line formulations. The material does not leach into water under normal fishing conditions because it is not designed to degrade and remains inert in aquatic environments. UV stabilizers may be present to prevent degradation from sunlight exposure, but these are not bioavailable during use.
The brand's record and disclosure
Stren is a long-established fishing line brand (owned by Pure Fishing/Newell Brands) with no documented product recalls or safety violations on record for this line. The company does not publish material safety datasheets or chemical transparency reports for consumer fishing line products. No certifications (organic, recycled content, eco-label) are claimed, reflecting the commodity nature of conventional monofilament. Brand stance on PFAS in fishing line formulations is not publicly disclosed.
How it compares in its category
Monofilament nylon fishing line is the industry standard and carries the same chemical profile across most major brands (Stren, Berkley, Trilene, Seaguar). Unlike braided lines (which use multiple fibers and adhesives) or fluorocarbon lines (which may contain different polymers), monofilament is chemically simple and stable. There are no meaningful safety advantages to premium brands in this category; composition is standardized by material science rather than brand differentiation.
If you buy it
Store in a cool, dry place away from direct sunlight to prevent UV degradation and brittleness. Inspect the line before each use for cracks, cloudiness, or loss of flexibility, which indicate age-related breakdown. Replace annually or after heavy use, as nylon loses tensile strength over time even in storage. Dispose of spent line responsibly (cut into short pieces, place in trash) to avoid wildlife entanglement; do not flush.
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.”
Material degradation and microplastic shedding
Nylon monofilament degrades under UV exposure and mechanical stress (casting, knot-tying), potentially releasing small polymer particles into aquatic environments. Risk is mainly environmental rather than to the user; end-of-life disposal is the primary concern.
UV stabilizer leaching
Standard nylon monofilament may contain hindered amine light stabilizers (HALS) to prevent photodegradation, but these are not documented as leaching into water at significant levels during normal use. No testing or warnings are on record for this specific product.
Heavy metals in colorant or additives
Fishing line formulations typically use organic dyes or no added colorant beyond the natural nylon base. No lead, cadmium, or other heavy metal contamination has been documented in commercial monofilament, and this is not a known manufacturing concern.
Skin irritation from handling
Nylon monofilament does not off-gas volatile compounds and does not cause chemical irritation on skin contact. The main risk is mechanical (sharp edges from cutting), not chemical.
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.
More fishing line & fishing tackle 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.