Hydrin® ECO
Hydrin epichlorohydrin (ECO) elastomers provide an excellent balance of heat (125°C), oil, fuel, and ozone resistance with superior low temperature flexibility. Hydrin is broadly used in automotive fuel hose, air ducts, A/C, and vibration dampening. Its electrical properties benefit laser printer rolls.
Hydrin is classified as a CH polymer according to SAE J200 / ASTM D2000.
To learn how Hydrin is a High-Performance Alternative to Polychloroprene, view the movie.
The best technical support comes from chemists with years of hands-on experience. Talk to our team about this product today.
The best technical support comes from chemists with years of hands-on experience. Talk to our team about this product today.
KEY ATTRIBUTES
Low Temperature Fuel Resistance
Hydrin ECO offers a unique combination of fuel resistance and low-temperature flexibility. As illustrated, compared to other elastomers of similar cost level, Hydrin has the best resistance to Fuel C while still possessing a glass transition temperature of -41°C.
. | ECO | NBR | NBR /PVC | CR | CSM | AEM |
|---|---|---|---|---|---|---|
| Volume Change, Fuel C, (%) | 32 | 58 | 44 | 103 | 92 | 142 |
| TR10, (ºC) | -44 | -31 | -17 | -42 | -18 | -33 |
Exceptional Heat Resistance
Standard Hydrin withstands prolonged heat exposure to 125°C (50% retention of properties after 1008 hours at temperature). ZEON recently developed and introduced Hydrin HT-ECO grades which provide increased long-term heat resistance up to 135°C, plus improved processability for easy mill handling and low extrusion die swell. Both Hydrin and Hydrin HT-ECO materials are an excellent replacement for lower performance materials such as NBR, NBR/PVC, or CR when a material upgrade is needed with limited cost increase.
The heat aging performance after 1008 hours at 135°C is also equivalent to aging 504 hours at 150°C or even 168 hours at 160°C. So, depending on the time at the temperature, Hydrin HT-ECO materials can provide higher heat resistance even above 135°C.
Static Dissipative
Hydrin is inherently and permanently static dissipative. Its polyether backbone provides conductivity, making it one of the most dissipative polymers available. These electrical properties remain uniform across molded articles. Hydrin can be compounded to achieve resistivity values as low as 3 x 10^6 ohms-cm without the addition of conductive additives.
Superior Fuel Resistance vs. CSM
Hydrin is an excellent alternative for chloro-sulfonated polyethylene (CSM) and polychloroprene (CR) rubber.
Hydrin’s resistance to diesel and bio-diesel fuels is superior to that of CSM. Compared to Hydrin, CSM suffers from loss of tensile strength and high level of volume change.
APPLICATIONS
Automotive Air Ducts & Hoses
Hydrin’s excellent resistance to hydrocarbon fluids and fuels make it ideal for air intake systems incorporating exhaust gas recirculation or engines with moderate to high levels of blow-by products. Automotive clean air intake ducts benefit from Hydrin due to its desirable balance of performance at a broad range of temperatures from -40°C to +135°C.
Suggested Grades
| Product Grade | Mooney Viscosity | Tg, (°C) |
|---|---|---|
| H55 | 50-60 | -21 |
| C2000LL | 53-65 | -41 |
| T3105 | 70-80 | -41 |
| T4000 | 35-45 | -40 |
| DP5235 | 40-52 | -40 |
Fuel Hoses and Diaphragms
Hydrin enables lower cost fuel hoses compared to other constructions.
Mono- and multi-layer fuel hoses are common applications of Hydrin. In multi-layer hoses, bis-phenol cured Hydrin provides excellent adhesion to the FKM inner layer and reinforcing braid while the terpolymer series of Hydrin is utilized for the cover layer. A common multi-layer construction is: Inner [bis-phenol cured FKM] | Tie Layer [Hydrin C2000 copolymer + Braid] | Cover layer [Hydrin T3105 terpolymer].
Bonding agents are commercially available, such as Hydrin PX or Vulcofac BPS/CP-3441, specially designed to promote ECO adhesion to peroxide cured and bisphenol cured FKM.
Suggested Grades
| Product Grade | Mooney Viscosity | Tg, (°C) |
|---|---|---|
| H55 | 50-60 | -21 |
| C2000LL | 53-65 | -41 |
| T3000L | 65-79 | -43 |
| T3105 | 70-80 | -41 |
| PX | NA | NA |
| T4000 | 35-45 | -40 |
| DP5235 | 40-52 | -40 |
Polychloroprene Rubber (CR) Replacement
Polychloroprene rubber (CR) can be replaced with Hydrin in a multitude of applications including seals and air springs. Hydrin fully meets ASTM D2000/SAE J200 ‘BC’ and ‘BE’ requirements.
Hydrin (ECO) Value Points vs Polychloroprene (CR) Rubber:
- Reliable and stable supply with ample production capacity
- Made in the USA
- Broad temperature range (-40 to 125C) plus fuel, oil, and ozone resistance at or better than CR
- Compatible with multiple cure chemistries including chlorine, sulfur, and peroxide
- Proven track record in automotive and industrial hoses, belts, seals, dampers, and diaphragms
- Newly developed grades now available with higher heat resistance (140C) and improved processing for easy calendaring and extrusion
Hydrin T3108 has better flex fatigue and cracking resistance than CR, even after aging in hot air for 168 hours (one week).
Hydrin polymers are more resistant to gas permeation than CR. Hydrin copolymers, such as C2000 grades, have similar low temperatures flexibility to CR with better air permeation resistance. Hydrin homopolymers, such as Hydrin H grades, offer even lower permeation rates which rival even Butyl rubber due to their increased chlorine content.
| Attribute | Typical Hydrin Compound | Range (Compound) |
|---|---|---|
| Shore A Hardness, points | 70 | 40 to 90 |
| Tensile @ Break, MPa | 14 | 8 to18 |
| Elongation @ Break, % | 450 | 150 to 600 |
| Compression Set, % (22 hours @ 100°C) | 15 | 10 to 25 |
| Heat Resistance, Tensile & Elongation, % Δ (70 hours @ 125°C) | -25 | -30 to -60 °C |
| IRM901 Oil, % Δ Volume (70 hours @ 125°C) | 1 | -5 to +5 |
| IRM903 Oil, % Δ Volume (70 hours @ 125°C) | 5 | 0 to +12 |
| Fuel B Resistance, % Δ Volume (70 hours @ 23°C) | 15 | +5 to +25 |
| Fuel C Resistance, % Δ Volume (70 hours @ 23°C) | 35 | +20 to +45 |
| Low-Temperature Retraction, TR10, °C | -40 | Down to -55 |
Suggested Hydrin Grades for CR Replacement
| CR Grade | Suggested Hydrin Grade | Mooney Viscosity, 100C | Tg by DSC, (°C) | Application |
|---|---|---|---|---|
| W | T4000 | 35-45 | -40 | General purpose with easy processing |
| WHV | T3000 | 80-94 | -43 | High viscosity for oil extended formulations |
| GRT | T3108 | 40-54 | -48 | Good flex fatigue for dynamic applications |
You don’t have to look far to find high-quality elastomers produced in the USA…
Laser Printer Rollers
The inherently static dissipative properties of Hydrin make it useful for both charge and developer rolls in laser printers and paper copier machines. The electrical resistance is consistent along the length of rolls made with Hydrin, which enables reliable, long-life print quality. While other elastomers require conductive additives, which may leach out and degrade over time, Hydrin is inherently static dissipative.
*Vulcanized 20min/170°C, 4hr/150°C Post Cure
| Attribute* | Hydrin T3106 Gumstock | Hydrin T3108 Gumstock | Hydrin T3108XL Gumstock |
|---|---|---|---|
| Hardness, Shore A | 43 | 42 | 30 |
| Resilience, Rebound, (%) | 55 | 56 | 52 |
| Compression Set,22H/70°C | 4.8% | 5.8% | 5.5% |
| Electrical Resistance, 23C/50%RH, +100V, Ohms | 6.2E+05 | 3.2E+05 | 2.9E+05 |
| Log Ohms | 5.8 | 5.5 | 5.5 |
Suggested Grades
| Product Grade | Mooney Viscosity | Tg, (°C) |
|---|---|---|
| T3106 | 53-67 | -48 |
| T3108 | 40-54 | -48 |
| T3108XL | 10-25 | -48 |
ESD Worksurface and Floor Matting
Electrostatic Discharge (ESD) poses a serious risk to sensitive
components in electronics manufacturing, causing latent or immediate failures that lead to costly rework and scrap. ESD mats are commonly used to cover workstation surfaces (tabletops and flooring) to safely dissipate static charge from personnel and components. However, conventional mats rely on conductive additives that degrade or wash out over time, requiring frequent testing, re‑treatment, or replacement.
Unlike additive‑based mats, Hydrin based ESD mats provides inherent, permanent, and stable electrostatic dissipation without conductive fillers or topical treatments due to the static dissipative properties of the polymer itself. This ensures rapid and controlled charge dissipation while maintaining low triboelectric charge generation, even under repeated foot traffic and material handling.
Hydrin mats can be manufactured as a single‑layer construction or as a cost‑optimized dual‑layer design. In dual‑layer configurations, the system delivers extremely low and stable surface resistance, enabling safe and effective static discharge from personnel, tools, and sensitive components. The excellent heat resistance of Hydrin polymers also enables Hydrin ESD mats to be used as tray liners for component baking processes.
Suggested Grades
| Product Grade | Mooney Viscosity | Tg, (°C) |
|---|---|---|
| T3108 | 40-54 | -48 |
| T3108XL | 10-25 | -48 |
GRADES
Hydrin® Epichlorohydrin Elastomers (ECO)
| Product Grade | Mooney Viscosity* | Tg, (°C) |
|---|---|---|
| H45 | 40-50 | -21 |
| H55 | 50-60 | -21 |
| H65 | 60-70 | -21 |
| H75 | 70-80 | -21 |
| H1100 | 52-65 | -26 |
| C2000 | 90-102 | -41 |
| C2000M | 75-90 | -41 |
| C2000L | 65-75 | -41 |
| C2000LL | 53-65 | -41 |
| C2000XL | 40-52 | -41 |
| DP5235‡ | 40-52 | -40 |
| T3000† | 80-94 | -43 |
| T3000L† | 65-79 | -43 |
| T3000LL† | 50-64 | -43 |
| T3100† | 63-77 | -36 |
| T3102† | 80-100 | -38 |
| T3105† | 70-80 | -41 |
| T3106† | 53-67 | -48 |
| T3108† | 40-54 | -48 |
| T3108XL† | 10-25 | -48 |
| T4000†‡ | 35-45 | -40 |
| T5010† | 75-100 | -40 |
| *Mooney Viscosity ML (1+4) @ 100°C | ||
| † Terpolymers (T Grades) can also be cured with sulfur or peroxide | ||
| ‡ New HT-ECO for high temperature applications | ||
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