Trilene · Fishing Line
Trilene XL Smooth Casting - 300YDs
Lower PFAS concern for a polymer fishing line, but no brand transparency on composition.
Trilene XL Smooth Casting is a monofilament nylon fishing line with no disclosed PFAS content or treatment. Nylon monofilament lines typically do not require water-repellent or grease-resistant coatings, making inherent PFAS risk lower than apparel or cookware.
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Monofilament nylon fishing line
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Trilene XL Smooth Casting is extruded monofilament nylon (likely nylon 6 or nylon 66), a single continuous polymer strand designed for tensile strength and knot-holding. Nylon monofilament does not use Teflon-type coating like some premium lines, eliminating fume-release risk from heating. The polymer itself is chemically stable under normal fishing conditions (freshwater, saltwater, ambient temperatures). Degradation occurs slowly through UV exposure and mechanical stress, not through leaching into food or water supplies.
The brand's record and disclosure
Berkley (Trilene parent company) does not publicly disclose monofilament composition details or manufacturing practices on this product line. No safety certifications, third-party testing, or PFAS transparency statements are available for Trilene XL. The brand has not faced major product recalls or safety complaints specific to this line in public records. Silence on materials is typical for fishing-line manufacturers but leaves consumers without verification of polymer purity or additives.
How it compares in its category
Monofilament fishing line is a commodity product with minimal safety differentiation across brands. Trilene XL is mainstream pricing and performance; no evidence suggests it uses unusual additives compared to Stren, Berkley Vanish, or store-brand equivalents. Fluorocarbon lines (e.g., Seaguar) carry slightly higher PFAS concern due to PVDF chemistry; braided lines are similarly safe. The 'Smooth Casting' formulation likely refers to surface treatment for casting distance, not a hazardous coating.
If you buy it
Store spools indoors, away from direct sunlight, to slow UV degradation and nylon embrittlement. Replace line annually or when it becomes cloudy, stiff, or shows visible wear or discoloration. Dispose of spools and trimmed line in trash (not water); monofilament is not readily biodegradable and poses entanglement risk to wildlife if discarded in nature. Nylon absorbs moisture and loses strength over time; keep in cool, dry conditions. No heating hazard or food-contact risk applies to fishing line.
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.”
UV and thermal degradation of nylon polymer
Nylon monofilament breaks down under prolonged UV exposure and becomes brittle; degraded fragments remain in the environment as microplastics. This is a usage and disposal concern rather than a direct health hazard, but represents polymer persistence in aquatic ecosystems if lost fishing line is not retrieved.
Additives in nylon formulation (colorants, stabilizers)
Trilene XL contains additives for color (e.g., titanium dioxide for visibility) and UV stabilization, but no public data documents heavy metals or hazardous chemicals in these formulations. Nylon additives are generally recognized as safe in the context of fishing use, where no ingestion or skin contact occurs.
Knot abrasion and microplastic shedding
Nylon line sheds microscopic fibers when tied, cast, and retrieved; these fibers may enter water systems. The volume is small per use but cumulative across millions of anglers globally; no evidence of significant health risk to humans, but ecological impact is documented.
Waterborne bacterial contamination (stored line)
Monofilament stored wet or in damp conditions can develop mold or bacterial growth on the spool, though this does not compromise line strength or pose direct health risk. Standard dry storage prevents this entirely.
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 Fishing Line
Stren
Original
Monofilament nylon fishing line
Lower PFAS concern for a fishing line product; no coating or treatment typical of PFAS carriers.
⚠Risky category by default
Maxima
Ultragreen One Shot
Lubricant/chain oil (mineral or synthetic base)
Lower PFAS concern for a chain lubricant; minimal Teflon-family coating/waterproofing risk profile.
⚠Risky category by default
Seaguar
Blue Label
Fluorocarbon fishing line (monofilament)
Fluorocarbon fishing line may contain PFAS; insufficient public data to grade definitively.
⚠Risky category by default
More fishing line 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.