Sazilast 501 — pourable polysulfide sealant for road joints
Pourable sealant of the 500 series for expansion joints in road pavements, bridges and tunnels under direct mechanical load; strength from 1.3 MPa.

For vertical and inclined joints under direct mechanical load, the 500 series offers Sazilast 503 — a two-component polysulfide sealant of thixotropic consistency that does not run out of the joint. Its nominal tensile strength at break is at least 1.5 MPa, elongation is at least 300%, fatigue endurance is at least 20,000 cycles, and water absorption does not exceed 0.5% by mass. The sealant is resistant to long-term exposure to groundwater, oils, fuel, acids and alkalis; contact with drinking water is not permitted.
| Manufacturer | Sazilast (SAZI) — OOO PK “SAZI”, Ramenskoye |
|---|---|
| Type | joint sealants |
| Use | joints and junctions, bridge structures, tunnels and metro |
| Base | two-component thixotropic polysulfide sealant |
| Colour | grey |
| Packaging | 15.4 kg kit: sealing paste 14 kg + curing paste 1.4 kg |
| Application method | mix the base paste with the curing paste using a low-speed drill for at least 10 min; in cold weather keep the kit in a warm room for at least a day; do not thin with solvents; apply by spatula only to a dry surface cleaned of dirt, grease, laitance and old sealant; in winter remove ice and frost |
| Application temperature | recommended range from −15 to +40 °C |
| Curing | curing 48 h at 23 °C; pot life at least 2 h at 23 °C |
| Key properties | nominal tensile strength at break at least 1.5 MPa; elongation at break at least 300% (on joint specimens); Shore A hardness after 24 h at least 30; water absorption not more than 0.5% by mass; UV ageing at least 1000 h; flow not more than 2 mm; fatigue endurance at least 20,000 cycles; service from −60 to +90 °C; resistant to long-term contact with groundwater, oils, fuels, acids, alkalis; contact with drinking water is not permitted |
| Consumption | 320 g/linear m (joint 20 mm wide, 10 mm layer) |
| Shelf life | 6 months at −20…+30 °C in undamaged factory packaging |
| Standards | STO 136-37547621-2016; certificate of conformity (manufacturer OOO PK “SAZI”, production — Ramenskoye) |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Pourable sealant of the 500 series for expansion joints in road pavements, bridges and tunnels under direct mechanical load; strength from 1.3 MPa.
Low-modulus pourable sealant for joints of bridges, tunnels and water conduits without direct mechanical load; elongation at break from 350%.
Two-component polyurethane sealant for panel joints and facade cracks in above-ground parts of buildings; permissible joint movement ±25%.
One-component hybrid sealant for joints of block and frame-monolithic buildings, cracks and door frames; joint movement up to 15%.
Winter version of the facade sealant for panel joints and cracks: applied at temperatures from −20 to +25 °C, brush application permitted.
Polyurethane facade sealant for wide panel joints: increased sag resistance, applied at temperatures from −15 to +45 °C.