Our hydrophilic water swelling rubber rings are compounded with modified EPDM and super absorbent polymer. It expands automatically when contacting water (150%-300% volume expansion), fills tiny gaps to block water seepage. Anti-aging, corrosion resistant, non-toxic eco-friendly. Custom size, color, expansion rate & logo available, widely used in basement, tunnel, pipeline and rebar waterproof projects.
5 Core Selling Points
Hydrophilic Self-Expansion Technology, Automatic Gap Sealing Blended with high water-absorbing resin inside EPDM matrix. Once touching water, it expands 150%~300% in volume gradually, tightly fills tiny gaps between steel bar, pipeline and concrete. Generate lasting contact pressure to cut off water channel, realize "stop water by water" effect, solve hidden leakage troubles thoroughly.
Dual Waterproof Performance: Elastic Seal + Swelling Block Integrates original EPDM elastic sealing and water-swelling self-repair function. In dry state, it fits tightly with components for basic sealing; when tiny cracks or displacement appear due to foundation settlement, it absorbs water and expands to repair gaps automatically, double waterproof guarantee compared with ordinary rubber gaskets.
Premium Modified EPDM Matrix, Long Service Life Base material is industrial EPDM rubber with excellent anti-ozone, anti-UV, anti-aging performance. Stable elasticity at -40℃~120℃, resistant to underground groundwater, alkaline concrete and slight corrosive liquid. Repeated water absorption & expansion won’t lose swelling performance, durable for decades underground projects.
One-Piece Precision Molding, Easy On-Site Installation Integrated injection molding without burrs, uniform density and stable expansion rate. Soft texture easy to sleeve on rebar, bolt and pipeline, no complicated construction process. Replace traditional asphalt, hemp thread and metal waterstop, greatly save labor and construction cost. Non-toxic & pollution-free, no harmful substance precipitated after long-term soaking.
Full OEM Customization & Wide Engineering Compatibility Custom inner/outer diameter, thickness, expansion rate (150%/220%/300%), color (black/red/grey) and brand silk printing. Suitable for basement rebar, through-wall pipeline, tunnel segment, subway, reservoir, sewage pipe, underground pipe gallery. Support small trial orders & bulk wholesale, free samples for mass clients.
Application Scenarios
Mainly applied to all kinds of underground, hydraulic and construction waterproof projects:
Civil buildings: basement floor rebar, through-wall water supply & drainage pipeline, split bolt waterproof
Municipal engineering: subway tunnel segment joints, comprehensive pipe gallery, sewage pipeline sealing
Water conservancy projects: reservoir, culvert, swimming pool, underground water tank construction joints
Industrial projects: underground factory, power cable penetration casing, foundation anti-floating bolt waterproof
We supply water stop rings to global construction material distributors, engineering contractors, pipeline manufacturers and waterproof material wholesalers.
Complete Custom Support
Size customization: Custom ID, OD, thickness, cross-section shape (O-ring, flat gasket, special profile)
Performance customization: Adjust water swelling ratio, EPDM hardness according to water pressure requirements
Appearance customization: Black, red, gray and other colors, silk screen brand logo on surface
Mold development: Produce non-standard special-shaped swelling rings based on customer drawings & samples
Flexible order policy: Accept small trial orders for engineering test, large bulk wholesale
Sample service: Free samples for customers placing mass bulk orders
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