NCflex PBD W-25 is a two-component elastic insulation resin based on polybutadiene (PBD) chemistry. Unlike rigid polyurethane or epoxy systems, NCflex does not form a hard structure after curing. Instead, it produces a low-modulus, elastic, and hand-removable protective mass.
NCflex vs Rigid Polyurethane
| Criterion | NCflex | Rigid PU System |
|---|---|---|
| Cured structure | Elastic, low-modulus | Hard, rigid |
| Service re-entry | ✅ Hand-removable | ❌ Mechanical removal |
| Probe measurement | ✅ Possible | Not possible |
| Vibration tolerance | ✅ Good | Limited |
| Low-temp performance | ✅ Remains elastic | May become brittle |
Where Is NCflex Used?
- Cable joints requiring service access: Tool-free, hand removal — practical for regular maintenance
- Vibrating environments: Vehicle electronics, pumps, compressors
- Cold climate applications: Retains elasticity at -20°C and below
- Connections requiring probe measurement: Measurement without removing insulation
- Sensitive electronic components: Low modulus minimises thermal stress
Why Polybutadiene?
The polybutadiene backbone has a glass transition temperature (Tg) typically between -50°C and -80°C — significantly lower than standard polyurethane systems. This ensures elastic behaviour is maintained even in very cold environments.
When to Choose NCflex
If the connection will need re-entry, if vibration is present, if temperatures are low, or if probe measurement is needed — NCflex is the right choice. For permanent high mechanical protection where re-entry is not required, choose a rigid PU system.