Nile Polymers FAQ
Find answers about Strong-Ty® cable ties, Purisan™ mixing impellers, Fluorinar-C™ filament, Light Link™ resin, material qualifications and ordering. Choose a topic below, then select a question to read the answer.
PVDF & Material Qualifications
Understand the material and the documentation behind it.
What is PVDF and what is Kynar®?
PVDF stands for polyvinylidene fluoride, a melt-processable fluoropolymer used where chemical resistance, purity, UV resistance and durability matter. Kynar® is Arkema’s registered trademark for its PVDF materials.
Nile Polymers uses Kynar® PVDF in Strong-Ty® cable ties, Purisan™ impellers and Fluorinar-C™ filament. Light Link™ combines Kynar® PVDF with a UV-curable resin formulation. Learn more about PVDF.
Which qualifications apply and can I request documentation?
Natural Strong-Ty® product information lists USP Class VI, ISO 10993-5, FDA 21 CFR 177.2510, REACH and RoHS compliance and lot traceability. Its manufacturing facility follows ISO 13485 procedures.
USP Class VI documentation applies to the Kynar® PVDF resin. Contact Nile Polymers for supporting documentation applicable to your product.
Fluorinar-C™ Kynar® PVDF filament passed ISO 10993-5:2009 in vitro cytotoxicity testing with Grade 0 (no reactivity). Read the Fluorinar-C™ test details below.
Qualifications are specific to the product, material and manufacturing process. They should not be assumed to apply to every color, formulation, finished assembly, or 3D-printed part. ISO 13485 concerns the manufacturing quality system; it is not a product sterilization rating.
Request the relevant documentation and include the product name, grade or color, lot number if available and the standard you need.
How do I check chemical compatibility?
Start with the Kynar® chemical-resistance guide, then evaluate the exact material in your process. Chemical concentration, mixtures, temperature, exposure time and mechanical loading can change the result.
For printed parts, test representative samples made with your intended print settings. Inspect dimensional change, swelling, cracking, strength and any sealing or leakage requirements. A lack of weight gain alone does not establish suitability.
Each user must use their own judgment to determine suitability for their application and operating conditions. For product documentation, email info@nilepolymers.com.
Fluorinar™ PVDF Filament
Cytotoxicity testing, product options, evaluation samples and spool information.
Has Fluorinar-C™ passed ISO 10993-5 cytotoxicity testing?
Yes. Fluorinar-C™ Kynar® PVDF filament passed in vitro cytotoxicity testing conducted by Pacific BioLabs according to ANSI/AAMI/ISO 10993-5:2009. The MEM extract test showed Grade 0 (no reactivity) at both 24 and 48 hours.
The filament sample was autoclaved at 121 °C for 30 minutes before testing. These results apply to the tested filament under the study conditions. Each user must evaluate finished printed parts for their intended application.
Pacific BioLabs study 19D0226S-M01, dated May 3, 2019. Request the test report.
Which filament colors and diameters can I order?
Fluorinar-C™ is our standard PVDF copolymer filament, supplied in natural white on 1 kg spools, with 1.75 mm and 2.85 mm diameter options.
Check the selected variant on the product page for current availability. For other colors or formulations, contact us about availability and lead times.
What is the difference between Fluorinar-C™ and Fluorinar-H™?
Fluorinar-C™ uses a Kynar® PVDF copolymer formulation. Compared with a homopolymer, it offers greater flexibility and lower crystallinity, which can make build-plate adhesion and printing easier.
Fluorinar-H™ uses a PVDF homopolymer formulation. Its greater crystallinity can make shrinkage and adhesion more challenging. Chemical and thermal performance depend on the exact grade and application.
Fluorinar-C™ is our standard online offering. Contact us before planning an order for Fluorinar-H™ or another specialty formulation.
Can I try a sample before buying a full spool?
Yes. We offer 100 g Fluorinar-C™ evaluation samples in 1.75 mm and 2.85 mm diameters. A sample lets you assess filament feeding, bed adhesion and part quality on your printer before committing to a full spool.
Approximately how much filament is on a 1 kg spool?
| Filament diameter | Approximate length |
|---|---|
| 1.75 mm | 239 m / 785 ft |
| 2.85 mm | 91 m / 300 ft |
Spools are sold by net filament weight. Length varies with actual diameter and formulation.
Printing with Fluorinar-C™
Practical starting points for your printer and part geometry.
Do I need an industrial printer or a heated chamber?
Not necessarily. Nile Polymers has demonstrated Fluorinar-C™ on a Bambu Lab A1 with AMS Lite and Bambu Studio. We also have experience with Ultimaker printers and Cura.
The printer must support the temperatures required by your profile and feed the filament consistently. Bed surface, part geometry and cooling all matter. Our A1 demonstration shows that a heated chamber is not required for every Fluorinar-C™ part.
What Bambu Studio settings should I start with?
Download the Bambu A1 Print Profile (PDF, v1.0) for the demonstrated Fluorinar-C™ setup with AMS Lite.
Our published Bambu A1 demonstration used the following settings with Fluorinar-C™ and AMS Lite:
| Setting | Demonstrated value |
|---|---|
| Maximum volumetric speed | 1.5 mm³/s |
| Flow ratio | 1.00 |
| Pressure advance K | 0.020 |
| Part cooling fan | Off |
| Automatic Flow Dynamics Calibration | Off when submitting the print |
| Small-part arrangement | Two parts, well separated, printed by layer |
These are settings from one demonstrated setup, not a complete profile for every machine. Use the correct printer, nozzle, bed surface and temperature settings for your setup, then verify them with a small test.
Read the demonstration and setup notes, or request help with your print profile.
Why do small features soften, sag, or lose their shape?
Small cross-sections can retain too much heat when the nozzle returns before the previous layer has cooled. Try printing two or more well-spaced parts using the normal by-layer sequence, so each part gets more cooling time between layers.
Begin with the cooling settings in your tested profile. If extra part cooling is needed, adjust it gradually and check layer adhesion. More fan is not automatically better for PVDF.
How much shrinkage should I allow for?
Shrinkage depends on geometry, formulation, orientation, cooling and print settings. Print and measure a calibration part before applying dimensional compensation to a production model.
In an earlier Nile Polymers test, a nominal 20 mm cube printed with white Fluorinar-C™, 0.2 mm layers and 30% infill measured:
| Axis | Measured size | Difference |
|---|---|---|
| X | 19.80 mm | −1.00% |
| Y | 19.87 mm | −0.65% |
| Z | 19.65 mm | −1.75% |
These are historical test results, not guaranteed shrinkage values or a universal scaling factor.
Which support materials work with PVDF?
HIPS and TPU have been evaluated as support materials, but neither is a universal solution. HIPS has limited adhesion to PVDF; TPU can adhere more readily but may leave residue or inclusions when removed.
Where possible, choose an orientation or part design that reduces the need for supports. Test the complete material and removal process before using it on a finished part. Do not assume a solvent that removes a support material is compatible with the PVDF print.
Can I have a PVDF part printed for me?
Yes. Nile Polymers works with Granville 3D Printing on Fluorinar-C™ projects. Send your model or drawing, quantity, required tolerances and intended chemical and temperature exposure to info@nilepolymers.com.
Strong-Ty® Cable Ties
Choose the right tie for your application.
Which Strong-Ty® cable tie is right for me: Natural or Blue?
Natural Strong-Ty® is the choice for bioprocessing, cleanroom, pharmaceutical and high-purity applications, with USP Class VI and ISO 10993-5 qualifications.
Strong-Ty® Blue is intended for chemical processing, UV and outdoor exposure, plating, photovoltaic, plenum and harsh industrial service.
Both are made with Kynar® PVDF. Compare cable ties and package options.
What sizes and package quantities are available?
Natural Strong-Ty® comes in 4-inch standard, 4-inch flex and 8-inch styles. Strong-Ty® Blue comes in a 4-inch style. Both product lines offer packages of 100 or 1,000 ties.
Check the product page for current availability and select the size and quantity you need.
Are Strong-Ty® cable ties supplied sterile?
No. Strong-Ty® cable ties are supplied non-sterile. Natural Strong-Ty® ties are manufactured and packaged in a cleanroom; cleanroom manufacture does not mean that a product has been sterilized.
Can Strong-Ty® cable ties be sterilized or irradiated?
Natural Strong-Ty® supports autoclave sterilization at 121 °C. PVDF also offers resistance to radiation and many chemicals, making gamma and chemical sterilization relevant options to evaluate.
Performance depends on the sterilization method, dose or concentration, temperature and number of cycles. Confirm the process for your specific tie and application rather than assuming every cycle leaves the properties unchanged. Ask us about your sterilization requirements.
Purisan™ PVDF Mixing Impellers
Impeller sizes, available threading and custom coated shafts.
What is Purisan™ and what is included?
Purisan™ is a three-blade, marine-style impeller injection molded from solid Kynar® PVDF. The impeller is sold separately from the shaft and drive equipment.
What impeller sizes and threads are available?
Purisan™ impellers are offered in 4-, 5- and 6-inch nominal diameters. M16 × 2 threading is available for the prop.
See the product page for part numbers, current prices and availability.
Can I order a Kynar® PVDF-coated shaft?
Yes. A 3/4-inch-diameter shaft coated with Kynar® PVDF is available by custom order. Minimum order: 10 shafts.
How do I decide whether Purisan™ is suitable for my application?
Each user must use their own judgment to determine suitability for their application and operating conditions.
The Kynar® Chemical Resistance Guide (PDF) provides material reference information.
Light Link™ PVDF Printing Resin
Resin printing, bottle options, finishing and technical documents.
What is Light Link™ and how does it differ from filament?
Light Link™ is a white photopolymer resin that combines Kynar® PVDF with a UV-curable formulation. It is used for resin printing. Fluorinar-C™ is a solid filament used for FDM printing.
Which printers can use Light Link™?
Light Link™ is intended for compatible 405 nm SLA, DLP and MSLA printers. Review the technical data sheet and your printer’s requirements when evaluating compatibility. Exposure and post-curing affect the finished part.
See the Light Link™ product page for printing guidance.
What bottle sizes and colors are available?
Light Link™ resin and finished parts are white. Bottle sizes are 0.5 kg and 1 kg.
Check the product page for current availability. If your bottle size is unavailable, ask about restock timing; the product page also links to our partner’s purchasing option.
Do Light Link™ prints need washing and post-curing?
Yes. The finishing process includes an isopropyl alcohol (IPA) wash, complete air drying and UV post-curing.
Follow the Technical Data Sheet (PDF), the Safety Data Sheet (PDF) and your equipment instructions for the full procedure.
Where can I find printing guidance and product documents?
The Light Link™ product page includes resin preparation, starting print settings, washing and post-curing guidance.
Evaluate the finished part for its intended application after printing and post-curing.
Orders & Support
Ordering, custom requirements and store policies.
Can you help with a custom requirement or a larger order?
Yes. Email sales@nilepolymers.com with the product, size or formulation, quantity, destination and required delivery date. For custom cable ties, include a drawing or the dimensions and performance requirements.
We can review feasibility, pricing, availability and lead time for your request.
When will my order ship and do you ship internationally?
Most in-stock orders are processed within 1–3 business days. Larger, special, or custom orders may take longer. Processing time is separate from carrier transit time.
International shipping is available. Charges are calculated at checkout or quoted separately; destination duties, taxes and brokerage fees are the customer’s responsibility unless otherwise agreed in writing.
How do returns, damaged items and incorrect orders work?
Our published refund policy accepts returns within 30 days of delivery for unopened products in their original condition and packaging. Contact us before sending a product back.
For a damaged, defective, or incorrect item, email sales@nilepolymers.com promptly with your order number and details. The full policy explains return shipping and refunds.
Where can I read your privacy policy?
Our privacy policy explains how information is collected, used and shared when you visit the store, place an order, or contact us.