PAHT Nylon Hydrophobic Filament — Moisture-Resistant Nylon, Made in USA
Engineered to solve nylon's biggest weakness. Filamatrix's Nylon Hydrophobic (PAHT — Polyamide High Temperature) is an unfilled nylon-based filament that absorbs moisture at
less than one-fourth the rate of standard PA6, and when it does absorb moisture, it affects print quality and physical properties far less than conventional nylons. Add in minimal warping and a
service temperature of 160°C, and you have a high temperature nylon filament that's as practical to print as it is durable in the field. Need higher stiffness and strength? See our
Nylon CF Hydrophobic (PAHT-CF).
Why Choose PAHT Over Standard Nylon?
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4x Lower Moisture Absorption — Dramatically fewer print failures from ambient humidity
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Minimal Warping — Easier bed adhesion and better dimensional accuracy than PA6
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High Temperature Resistance — 160°C service temperature with an HDT of 90°C at 1.82 MPa (264 psi), maintaining performance under higher loads where most nylons fall short
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High-Heat Rated Spool — Built to withstand drying temperatures, unlike standard spools that can warp in a filament dryer or oven
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Tight Diameter and Ovality — 3-axis filament measurement for consistent extrusion, fewer jams and clogs
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Made in USA — Designed by engineers with 50+ years of plastic extrusion experience
Applications That Benefit from PAHT Nylon Hydrophobic:
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Automotive & Under-Hood Parts — Heat and chemical resistant housings and brackets
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Industrial Fixtures & Tooling — Durable jigs and fixtures in humid shop environments
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Outdoor & Marine Components — Functional parts exposed to humidity, rain, or salt air
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Enclosures & Electronics Housings — Protection in variable temperature and moisture conditions
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Functional Prototypes — Realistic mechanical properties for engineering validation
Technical Specifications:
- Material: PAHT (Polyamide High Temperature / Nylon Hydrophobic)
- Diameter: 1.75mm and 2.85mm
- Recommended Nozzle Temperature: 265–290°C
- Recommended Bed Temperature: 50°C
- Recommended Drying Temperature: 90°C (6–12 hours)
- Service Temperature: 160°C
- Heat Deflection Temperature (HDT): 90°C @ 1.82 MPa (264 psi) — most materials are rated at the lower 0.45 MPa standard
- Made in USA
Spool Specifications:
- Flange Diameter: 203mm
- Traverse Width: 55mm (500g) / 78mm (1kg)
- High-heat rated spool — designed to withstand drying temperatures, unlike standard spools that can warp in a filament dryer or oven
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Note: Due to spool dimensions, this product may not be compatible with the Bambu AMS, Prusa MMU, or other automated material handling systems. Please verify your system's spool size requirements before purchasing.
Tips for Optimal Printing:
- A variety of build surfaces (glass, Garolite, PEI, etc.) may be used.
- Nylon is moisture sensitive; measures should be taken to keep the filament dry.
- Generally, slower speeds, larger nozzles, and thicker layers are recommended as a starting point, but feel free to experiment with other settings.
A Few Words About Drying:
- All 3D printer filaments are at least somewhat prone to absorbing water (hygroscopic)
- Nylon Hydrophobic (PAHT) absorbs moisture much slower than standard nylon — but it's not immune
- The effects of moisture may take days or weeks to become noticeable after exposure to room conditions
- Indications of moisture problems include popping or spitting when printing and stringy prints
- Drying may be done in a dedicated filament dryer, oven, or food dehydrator
- For Nylon Hydrophobic, dry six to twelve hours at 90°C (194°F)
Data Sheets:
Whether you're searching for
PAHT filament,
PA6 filament,
moisture resistant nylon filament,
heat resistant filament,
high temperature nylon filament, or a
low warp nylon 3D printing material — Filamatrix's Nylon Hydrophobic delivers a 160°C service temperature, 90°C HDT at 1.82 MPa, and 4x lower moisture absorption than standard PA6, proudly made in the USA. For carbon fiber reinforced performance, see our
PAHT-CF Nylon CF Hydrophobic.
