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.

Founded in 2009, SOCO is a global leader in the development and production of Superabsorbent Polymers (SAP), offering cutting-edge solutions for a wide range of industrial applications. With advanced R&D capabilities and state-of-the-art manufacturing facilities, the company specializes in high-quality products such as sludge solidification agents, ice pack hydrogel, and cable water-blocking powder,etc, all of them are designed to meet the evolving needs of industries worldwide.

SOCO excels in providing innovative solutions for liquid absorption, waste management, and moisture control. Driven by its "SAP++" philosophy, SOCO emphasizes continuous improvement, collaboration, and sustainability. Since its establishment, the company has customers in more than 120 countries and regions all over the world, and has established 7 overseas warehouses in US, Peru, South Africa, Indonesia, and France.According to customs statistics, since 2015, our industrial-grade SAP products have been among the best in the export volume of similar domestic products.

SOCO always believes that the strength of scientific research is the key to benefiting society and shaping the future. 

Why Choose SOCO

Founded in 2009, SOCO is a leading SAP manufacturer.

We have our own R&D Lab and Planting Lab.

We serve clients in 120+ countries and regions.

We have developed a global network of distributors.

With global warehousing & fast shipment system.

Over 30+ international certificates(SGS,ISO,IATA).

Safety, non-toxic, degradable, non-heavy metal, food grade material.

Independent research lab for salt & alkali resistance research & fast water absorption projects.

Global Warehouse Network, Delivering Swiftly to You

SOCO established 7 overseas warehouses in multiple countries and regions around the world. In North America, local transportation achieves delivery within 3-5 days. Adequate inventory and an efficient logistics system enable us to meet our customers' urgent needs and large volume orders, while also reducing logistics costs.