High Expansion Capacity Water Swelling Rubber Pressure Resistance Swellable Waterstop

​​MACRO SORB® Expanding Rubber Polymer Technical Profile​​

This advanced functional material (CAS 9003-04-7) combines elastic sealing properties with hydrophilic expansion capabilities, delivering dual water-stop effects for critical infrastructure including subways, tunnels, culverts, underwater constructions, and urban water supply systems.

Composed of a rubber matrix and hydrophilic components, the polymer absorbs water to expand multiple times its original volume, filling irregular surfaces and gaps under pressure to ensure effective sealing.

​​Product Specifications​​

• ​​Model​​: MACRO SORB® RUBSORB Polymer

• ​​Origin​​: Qingdao, China

• ​​Appearance​​: White granules (≥150 Mesh)

• ​​Performance​​: Water-keeping ratio ≥300%, moisture content <6%, pH 6-7 (1% aqueous solution), monomer content ≤500ppm

• ​​Certifications​​: ISO9001, SGS (non-toxic/no heavy metals), BV (degradable), REACH (low sulfate residue)

​​Core Advantages​​

• ​​Dual Functionality​​: Elastic sealing + water-absorbing expansion

• ​​High Expansion​​: Multiples volume increase to fill complex geometries

• ​​Pressure Resistance​​: Maintains sealing integrity under high-pressure conditions

• ​​Eco-Safety​​: Non-toxic composition with environmental safety certification

• ​​Versatility​​: Applicable across diverse infrastructure projects

• ​​Cost Efficiency​​: Reduces maintenance through durable leakage prevention

​​FAQ​​

​​Q1: Operational mechanism?​​

Expands upon moisture/heat exposure to fill gaps/cracks, forming flexible watertight seals after curing.

​​Q2: Expansion/curing duration?​​

Initial expansion: 10–30 minutes; Full curing: 24–48 hours (environment-dependent).

​​Q3: Environmental resistance?​​

Withstands water immersion, UV exposure, temperature fluctuations, and chemical corrosion.

​​Q4: Soundproofing capability?​​

Effective for vibration damping and acoustic insulation through gap-filling properties.