Pecora 300 SL Pavement Joint Sealant is a one-part ultra-low modulus self-leveling silicone limestone quart cartridge for traffic-bearing pavement joints. The bead is recessed below traffic and listed at +100/-50% movement.
Pecora 300 SL Pavement Joint Sealant is a one-part ultra-low modulus self-leveling silicone for traffic-bearing pavement joints. It is used on concrete, asphalt, and metal roadway, airfield, and parking-deck control joints. It is placed as a limestone quart cartridge on flat surfaces. Unprimed adhesion to concrete, metal, and asphalt is listed, with the bead recessed below traffic. Neutral moisture-cure and jet-fuel resistance are listed; movement is +100/-50%.
| Property | Value |
|---|---|
| Joint movement | +100/-50% (ASTM C719) |
| Tack-free time | 60 min (ASTM C679) |
| Initial skin | About 30 min at 77 F, 50% RH |
| Hardness, Shore 00 | 65 (21 day, ASTM C661) |
| VOC | 40 g/L (ASTM D3960) |
| ASTM C920 | Type S, Grade SL, Class 100, Use T2, M, O |
| Pack | Limestone quart cartridge |
| Recess | Below traffic surface (not flush) |
| Slope limit | Not greater than 5% |
| Primers | Primerless; P-225 on concrete or P-200 on asphalt when required |
Product documents: Pecora 300 SL Specification Data Sheet PEC 102 08/25 (PDF)
What work is Pecora 300 SL used on?
Yes. Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge is used on traffic-bearing pavement joints in concrete, asphalt, and metal, including roadway, airfield, and parking-deck control joints.
What size is Pecora 300 SL?
Size is a limestone quart cartridge of one-part self-leveling silicone pavement joint sealant on Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge.
What joint movement is listed for Pecora 300 SL?
Joint movement of +100/-50% is listed for Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge on the 08/25 specification data sheet.
What joint width and depth is listed for Pecora 300 SL?
Joint width 1/4 to 1 inch and sealant depth 1/4 to 1/2 inch are listed for Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge, ideally 2:1 width-to-depth when appropriate.
What traffic recess is listed for Pecora 300 SL?
The bead of Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge is recessed below the traffic surface; flush placement with traffic is not listed.
What slope limit is listed for Pecora 300 SL?
Slopes greater than 5% are not listed for Pecora 300 SL Pavement Joint Sealant Limestone Quart Cartridge; the self-leveling silicone is listed for flat surfaces.
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