Willseal Seismic HS. Pre-compressed horizontal foam joint seal with a factory silicone face for non-trafficked joints.
Willseal Seismic HS is a pre-compressed, self-expanding polyurethane foam joint seal with a factory-applied silicone face for non-trafficked horizontal joints. Use it on floor-to-wall, retrofit, and seismic joints that are not a traffic deck. Movement is +/- 50%. Joint sizes 1/2 in to 4 in. Willseal Seismic is the vertical grade and is listed separately. Willseal 250 is the traffic-grade horizontal seal and is listed separately.
| Property | Value |
|---|---|
| Manufacturer | Tremco Willseal |
| Product | Seismic HS |
| Chemistry | acrylic-impregnated PU foam |
| Face | factory silicone, non-traffic |
| Orientation | horizontal, non-trafficked |
| Movement | +/- 50% |
| Joint sizes | 1/2 in to 4 in sticks |
| Stick length | 6.5 ft |
| Stability | -40 to 185 F |
| Install temp | -14 F to 95 F |
| Other grades | Seismic and Willseal 250 listed separately |
Product documents: Willseal Seismic HS Datasheet (PDF)
What is this?
Willseal Seismic HS, the horizontal non-trafficked seismic foam seal.
Can it take traffic?
No. Traffic-grade horizontal is Willseal 250, listed separately.
Vertical?
That is Willseal Seismic, listed separately.
How much movement?
+/- 50%.
Who makes it?
Tremco Willseal.
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