Product Description

Rubber waterstop, made of quality SBR (styrene butadiene rubber), neoprene rubber or natural rubber, is one of the widest types for concrete structure to prevent liquid leaking in or out. Generally, designed to be cast in the concrete, rubber waterstops are ideal for applications where high physical properties of rubber are required. For example, reservoirs, dams and other water retaining or excluding applications with high movements or water pressure.

Main types:

Dumbbell type

Dumbbell type water stops, with flat web section, are ideal for construction and partial contraction joints with little or no movements.

Center bulb type

Center bulb type waterstop, as its name implies, features its center bulb which makes it ideal for contraction and expansion joints including high lateral, transverse and shear movements. Meanwhile, it is perfect for withstanding the subsidence of the joints.

• Ideal for high movements joints.

• Water containments.

• Water excluding.

• Tunnels and civil engineering structures.

• Water and waste treatments.

• Dams, reservoirs, and spillway.

• Chemical areas. 

• Irrigation canals, sea walls and culverts.

SPECIFICATIONS

Product:	Rubber waterstop
Material:	SBR/High tensile neoprene rubber/Natural rubber
Water absorption 2 days at 70°C (% change)	5% (max)
Hardness shore A	65
Tensile strength	3000 psi (min) /2500 psi (min) /3500 psi (min)
Tensile strength at 300% Modulus	1150 psi (min)/1150 psi (min)/1450 psi (min)
Ultimate elongation	450% (min)/450% (min)/500% (min)
Compression set 22 hours at 70°C (% original deflection)	30% (max)/40% (max)/30% (max)
Accelerated aging 96 hours at 70°C (% of tensile strength before aging)	80% (min)
Ozone resistance 7 days at 50 PPHM at 70°C, 20% elongation	No crack

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