Aptflex F3S is a two-part, high performance encapsulation material. It is the toughest and most durable encapsulant material in the range from Precision Acoustics Ltd. It has excellent hydrolytic stability and an acoustic wave speed similar to that of seawater. It has slightly higher absorption and is less flexible than other encapsulants.
These properties make Aptflex F3S an ideal system for hydrophone potting, marine encapsulation applications or as an acoustic window.
Aptflex F3S is particularly useful where the component being potted may be subject to abrasion since it is more capable of withstanding such wear than our other encapsulants.
- Flexibility and resistance to temperature extremes of -50°C to 100°C
- Low moisture sensitivity during the cure phase
- Excellent hydrolytic stability
- Excellent electrical insulation properties
- Acoustic wave speed similar to that of seawater
- Moderate transmission loss and ultrasonic absorption
|Appearance||Natural (Straw colour)|
|Density Part A||1.05g/ml|
|Density Part B||1.01g/ml|
|Mix Ratio||7.3:1 (By Weight A:B)|
|Initial Mixed Viscosity||70 poise at 25°C|
|Usable Life||25 minutes at 25°C|
|Gel Time||50 minutes at 25°C|
|Curing times*:||24-48 hours at 25°C
over night 30°C
6 hours at 50°C
4 hours at 80°C
|Hardness||75-80 Shore A|
|Elongation at Break||1000%|
*Curing Times are temperature dependant. Precision Acoustics reserves the right to change the specification without notice
The shelf-life of unopened sachets is at least 12 months.