Shimano · Fishing Line
shimano Exage Monofilament Fishing Line
Lower concern; standard monofilament fishing line typically contains no PFAS, but Shimano does not publicly disclose composition details.
Shimano Exage Monofilament is standard nylon fishing line without known PFAS-prone coatings like Teflon-type coating or Teflon-family coating. Fishing line generally does not require water-repellency treatments that introduce PFAS.
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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
Shimano Exage Monofilament is extruded nylon polymer, a synthetic thermoplastic engineered for tensile strength and knot-holding under load. Monofilament nylon does not rely on coatings, glazes, or chemical finishes that introduce leaching risks; the material itself is the functional component. Unlike braided lines, mono has no voids or woven structures that trap contaminants, making it chemically stable in freshwater and saltwater use. Standard nylon monofilament is not known to degrade or leach hazardous compounds during normal fishing.
The brand's record and disclosure
Shimano is a major Japanese fishing and cycling component manufacturer with no public disclosure of material composition, heavy metals testing, or third-party certifications for fishing line safety. No recalls or safety controversies on record for Exage monofilament. The brand's silence on PFAS and other chemical details is typical of the fishing line industry; transparency is not a competitive differentiator in this category and no regulatory mandate exists for disclosure.
How it compares in its category
Exage monofilament sits in the mid-market segment of nylon fishing lines; it is not premium carbon-coated or specialty formulated. Comparable monofilaments (Berkley Trilene, Yo-Zuri, Seaguar) have equally limited public composition data. Braided and fluorocarbon alternatives introduce different material profiles but no clear safety advantage; all mainstream fishing lines lack hazard testing by consumer safety bodies, reflecting the niche nature of the product category.
If you buy it
Store in cool, dry conditions away from direct sunlight to slow UV degradation, which yellows and weakens nylon over time. Replace line annually or after heavy use, as micro-cracks from casting stress and UV exposure compromise knot strength. Do not heat or boil line for storage or treatment; nylon will soften and degrade. Dispose of spent line in trash or a designated recycling program; do not discard in water.
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 degradation and material embrittlement
Nylon monofilament degrades under sunlight exposure, becoming brittle and prone to breakage. This is a performance rather than toxicological hazard, but failed line can strand fish and create litter.
No established leaching or migration hazards
Nylon monofilament does not leach monomers, plasticizers, or heavy metals into water at normal temperatures. No public data on Shimano Exage specifically, but the material class has no documented bioaccumulation or toxicity pathway in aquatic use.
Microplastic shedding from wear
Nylon breaks down into particles through abrasion on guides and through the water; the extent of microplastic contribution from fishing line relative to other sources is not quantified and remains a research gap rather than an established consumer risk.
Thermal stability under storage
Nylon is stable at room temperature and does not off-gas or degrade into harmful compounds during typical storage. Exposure to extreme heat (above 80C) can soften the polymer but is unlikely in consumer use.
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.