Finger Lakes Extrusion Corp. is a trusted name in American-made tubing solutions, known for delivering high-performance products that meet the rigorous demands of industries requiring reliability and durability. We focus on advanced materials and strict quality standards to create innovative tubing solutions for challenging applications. Among our premium offerings is the Ester-PUR FLEX™ 85 tubing line, designed to provide excellent abrasion resistance, chemical compatibility, and flexibility, making it a dependable choice for various industrial needs.
Ester-PUR FLEX™ 85 Tubing: A Superior Tubing Solution
The Ester-PUR FLEX™ 85 tubing line combines quality, sustainability, and innovation to meet the needs of demanding industries. Made from ester-based polyurethane resin, this tubing offers enhanced abrasion and impact resistance compared to traditional materials like PVC. Its glass-like clarity, flexibility, and plasticizer-free design make it versatile for various applications while minimizing extractables, particularly in high-purity environments. The tubing also delivers substantial resistance to aliphatic hydrocarbons, petroleum products, and atmospheric ozone, maintaining performance in challenging conditions. However, it is not recommended for aqueous solutions, as it is specifically engineered for other industrial applications.
Why Finger Lakes Extrusion Corp. for Ester-PUR FLEX™ 85?
- Decades of Expertise: We bring knowledge and experience to producing high-quality tubing solutions.
- Reliable Manufacturing: All our products are proudly made in the USA using advanced materials and processes to meet strict industry standards.
- Regulatory Compliance: Our tubing meets FDA food-contact standards (21 CFR 177.1680 & 177.2600) and is NSF-61 listed for potable water use. It also complies with RoHS, REACH, and Proposition 65 regulations.
- Performance-Driven Design: Ester-PUR FLEX™ 85 is built to provide superior durability, chemical resistance, and flexibility for demanding applications.
Features of Ester-PUR FLEX™ 85
- Made from pure polyurethane resin, containing no plasticizers and featuring very low levels of extractables.
- Resistant to tearing, abrasion, atmospheric ozone, and petroleum-based products.
- Maintains flexibility even in low-temperature environments.
- Complies with FDA food-contact regulations (CFR 21), NSF Standard 61, RoHS, and REACH standards.
- Free from substances listed under California Proposition 65.
Ester-PUR FLEX™ 85 Tubing
- Resistant to atmospheric ozone, aliphatic hydrocarbons and petroleum products
- Pure polyurethane; contains no plasticizers and low levels of extractables
- Complies with FDA CFR21 food packaging
- Tough; resists tearing and abrasion
- Flexible at low temperatures
- Meets RoHS and REACH standards, also does not contain any substances listed on Proposition 65
Applications
- Finger Lakes Extrusion Corp. designed Ester-PUR FLEX™ 85 tubing to perform in a wide range of specialized applications, including:
- High-purity applications requiring low extractables.
- Fuel lines for hydrocarbon-based fuels.
- Instrumentation and cable jacketing where durability and clarity are essential.
- Gas sampling lines for industrial and environmental monitoring.
Specifications
All Ester-PUR™ 85 tubing products offer the following:
- Complies with FDA food-contact regulations 21 CFR 177.1680 (Polyurethane Resins) and 177.2600 (Rubber Articles Intended for Repeated Use), subject to the limitations of and any other applicable regulations. In addition, this material is listed under NSF standard 61 for use in potable water applications.
- Meets RoHS and REACH standards, also does not contain any substances listed on Proposition 65
Chemical Resistance
Ratings for ideal conditions 73°F / 25°C
| Strong Mineral Acids | Fair |
|---|---|
| Organic Acids | Not Recommended |
| Weak Acids | Good |
| Bases – Weak | Good |
| Bases – Strong | Good |
| Solvents | Fair |
Size Chart & Physical Properties
Size Chart
| Catalog Number | ID Size In. | OD Size In. | Wall | Operating Pressure PSIG 73°F | Case Qty. Ft. |
|---|---|---|---|---|---|
| 8685-4170 | 1/16 | 1/8 | 1/32 | 106 | 100 |
| 8685-4240 | 1/8 | 3/16 | 1/32 | 70 | 100 |
| 8685-4245 | 1/8 | 1/4 | 1/16 | 110 | 100 |
| 8685-4290 | 3/16 | 1/4 | 1/32 | 56 | 100 |
| 8685-4295 | 3/16 | 5/16 | 1/16 | 86 | 100 |
| 8685-4330 | 1/4 | 5/16 | 1/32 | 50 | 100 |
| 8685-4335 | 1/4 | 3/8 | 1/16 | 76 | 100 |
| 8685-4340 | 1/4 | 7/16 | 3/32 | 96 | 100 |
| 8685-4345 | 1/4 | 1/2 | 1/8 | 110 | 100 |
| 8685-4390 | 5/16 | 7/16 | 1/16 | 66 | 100 |
| 8685-4400 | 5/16 | 9/16 | 1/8 | 100 | 100 |
| 8685-4430 | 3/8 | 1/2 | 1/16 | 56 | 100 |
| 8685-4435 | 3/8 | 9/16 | 3/32 | 76 | 100 |
| 8685-4440 | 3/8 | 5/8 | 1/8 | 90 | 100 |
| 8685-4465 | 7/16 | 5/8 | 3/32 | 66 | 100 |
| 8685-4505 | 1/2 | 5/8 | 1/16 | 40 | 100 |
| 8685-4515 | 1/2 | 3/4 | 1/8 | 76 | 100 |
| 8685-4565 | 5/8 | 13/16 | 3/32 | 52 | 100 |
| 8685-4570 | 5/8 | 7/8 | 1/8 | 60 | 100 |
| 8685-2605 | 3/4 | 1 | 1/8 | 56 | 50 |
| 8685-2640 | 7/8 | 1-1/8 | 1/8 | 46 | 50 |
| 8685-2675 | 1 | 1-1/4 | 1/8 | 40 | 50 |
Physical Properties
| Properties | ASTM Method | Value Rating |
|---|---|---|
| Hardness; Shore A (+/-5) | D2240 | 85 |
| Vacuum | Not Recommended | |
| Operating temperature range | -70° – 175°F -56° -85°C | |
| Maximum Working Pressure | 73°F / 76PSI 125°F / 38PSI | |
| Testing Size | 1/4″ID x 1/16″W | |
| Color | Transparent Natural | |
| Odor | Slight | |
| Taste | N/A | |
| Specific Gravity; g/cm³ | D792 | 1.20 |
| Tensile Strength; psi | D638 | 5000 |
| Ultimate Elongation; % | D638 | 500 |
| Flame Resistance | D568 | Burns |
* The above is accurate to the best of the Company’s knowledge, however, these are typical values and should not be used as a certification. All materials should be tested for suitability in their intended use.
Partnering with Finger Lakes Extrusion Corp.
At Finger Lakes Extrusion Corp., we provide products that meet the highest quality standards while addressing the unique challenges faced by our customers. The Ester-PUR FLEX™ 85 tubing line combines innovation and reliability, making it a trusted choice for numerous industries. Contact us today to learn more about how our tubing solutions can support your applications.



