SikaHyflex®-305 AP

Backing material

:

Use closed cell | Polyethylene foam backing rods

Colour

:

Grey | Black

Composition

:

Neutral cure silicone

Joint Depth [mm]

:

6 | 8 | 10 | 15

Joint Width [mm]

:

10 | 15 | 20 | 30 | 45

Packaging

:

600 ml foil pack | 20 foil packs per box

Ambient air temperature

:

+5 °C to +40 °C, min. 3 °C above dew point temperature

Curing rate

:

~ 2 mm/24 hours (23 °C / 50% r.h.)

Density

:

~ 1.50 kg/l

Elastic recovery

:

~ 80%

Movement capability

:

Movement capability of ±50 % (ASTM C 719), ± 25% | ± 50%

Neutral cure

:

Yes

Resistance to weathering

:

10

Sag flow

:

~ 2 mm (20 mm profile, 50 °C)

Secant tensile modulus

:

~ 0.35 N/mm2 at 100% elongation (23 °C ) | ~ 0.40 N/mm2 at 100% elongation (−20°C)

Service temperature

:

−40 °C to +150 °C

Shelf life

:

12 months for cartridges and 15 months for foil packs from the date of production

Shore A hardness

:

~ 25 (after 28 days)

Skinning time

:

~ 25 minutes (23 °C / 50% r.h.)

Solvent-free

:

Yes

Storage conditions

:

Protected from direct sunlight and at temperatures between +5 °C and +25 °C.

Substrate temperature

:

+5 °C to +40 °C

Tack free time

:

~ 160 minutes (23 °C / 50% r.h.)

Tear propagation resistance

:

~ 4.5 N/mm

Very good workability

:

Yes

Weather resistance

:

Very good

Certification

:

ASTM C 920, class 50