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    YURU OPU Hydrophobic Polyurethane Foam Grout - YURU Waterproof
    Oil-soluble polyurethane hydrophobic foam is a single-component, water-reactive grouting material that expands to form a permanent, non-soluble seal, commonly used for sealing cracks and waterproofing structures like tunnels, dams, and basements. It repels water upon expansion, making it effective for cutting off water flow in wet environments. 
    Key Characteristics and Applications 
    • Expansion and Sealing: It expands rapidly (often up to 30 times its original volume), forcing water out and creating a tight, closed-cell foam seal that does not shrink after curing.
    • Waterproof Plugging & Reinforcement: Ideal for repair in challenging water-bearing areas, including joints, cracks in concrete foundations, subway tunnels, and mines.
    • Oil-Soluble: Designed to be compatible with oil-based substances while maintaining its ability to react solely with water.
    • Durability: Provides strong adhesion and is resistant to corrosion. 
    Usage Procedure 
    1. Cleaning: Clear the cracked or leaking area.
    2. Injection Hole Preparation: Drill holes along the leak, spaced about 200-500mm apart.
    3. Inserting Needles: Place water-stop needles to securely anchor the material in the structural wall.
    4. Grouting: Inject the polyurethane material into the cracks to initiate the reaction. 
    Differences from Other Polyurethanes
    Unlike hydrophilic materials, hydrophobic polyurethanes do not rely on moisture to stay intact; they repel water. These are typically chosen for permanent repair rather than temporary water control, unlike water-based polyurethane floor coatings, which are for finishing wood. 
    • Buy One Component Oil-Soluble Polyurethane Hydrophobic ...
      PU-111 One Component Oil-Soluble Polyurethane Hydrophobic Foam （TDS）.pdf. Description. One Component Oil-Soluble Polyurethane Hydr...
      Sinograce Chemical
    • YURU OPU Hydrophobic Polyurethane Foam Grout
      hydrophobic polyurethane foam grout Application. The pool, water tower, basement, grouting shelter and other buildings. Undergroun...
      YURU Waterproof
    • Hydrophobic Oil Soluble Polyurethane Grouting Material
      Experience in off-line construction. It is used for deformation cracks in the basement of buildingsstructural joints of constructi...
      Alibaba.com
    • Applying Polyurethane: A water based polyurethane over an ...
      Jun 28, 2016 — hey hey back for round. two. so I am prepping my floors right now for polyurethane. which we talked about earlier. and I showed yo...
      2:28
      YouTube·Gathered In The Kitchen
    • Hydrophobic vs Hydrophilic Polyurethanes - The Difference
      Aug 24, 2023 — The terms hydrophobic and hydrophilic may not mean anything to the average person. But, to a contractor, these terms can mean a wo...
      Alchatek
    • Buy One Component Oil-Soluble Polyurethane Hydrophobic ...
      PU-111 One Component Oil-Soluble Polyurethane Hydrophobic Foam （TDS）.pdf. Description. One Component Oil-Soluble Polyurethane Hydr...
      Sinograce Chemical
    • YURU OPU Hydrophobic Polyurethane Foam Grout
      hydrophobic polyurethane foam grout Application. The pool, water tower, basement, grouting shelter and other buildings. Undergroun...
      YURU Waterproof
    • Hydrophobic Oil Soluble Polyurethane Grouting Material
      Experience in off-line construction. It is used for deformation cracks in the basement of buildingsstructural joints of constructi...
      Alibaba.com
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    Videos
    What Does Oil-Based Polyurethane Do?
    YouTube · Varathane
    Jan 23, 2026
    YouTube · Varathane
    3:06
    Oil-based polyurethane creates a hard, smooth coating that protects wood from scratches, scuffs, and wear, ideal for interior projects.
    Varathane
    YouTube·
    Jan 23, 2026

    What Does Oil-Based Polyurethane Do?

    YouTube·Varathane·Jan 23, 2026
    YouTube
    In this video
    • 00:00
      Introduction
    • 00:32
      What is Polyurethane?
    • 00:45
      Application
    • 01:33
      Re-Coat
    • 02:34
      Final Thoughts
    • 02:45
      Outro
    Oil vs. Water Polyurethane: Which Finish is Better?
    YouTube · Lumberjack Build - How To
    Nov 15, 2024
    YouTube · Lumberjack Build - How To
    7:01
    Oil-based finish is more durable & cheaper but smells bad & turns yellow. Water-based is healthier, dries faster, and stays clear.
    Lumberjack Build - How To
    YouTube·
    Nov 15, 2024

    Oil vs. Water Polyurethane: Which Finish is Better?

    YouTube·Lumberjack Build - How To·Nov 15, 2024
    YouTube
    Oil vs Water-Based Polyurethane (and Shellac Combo) on ...
    YouTube · Bold Wallflowers Refinishing
    Jul 18, 2025
    YouTube · Bold Wallflowers Refinishing
    1:25
    Oil-based poly gives warm, rich tones but can yellow. Water-based dries fast and doesn't yellow, but has a flatter, cooler tone.
    Bold Wallflowers Refinishing
    YouTube·
    Jul 18, 2025

    Oil vs Water-Based Polyurethane (and Shellac Combo) on ...

    YouTube·Bold Wallflowers Refinishing·Jul 18, 2025
    YouTube
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    Web results

    YURU OPU Hydrophobic Polyurethane Foam Grout


    YURU Waterproof
    https://yuruwaterproof.com › Products › Injection Grouts
    YURU Waterproof
    https://yuruwaterproof.com › Products › Injection Grouts
    Oily polyurethane grouting is a polymer grouting plugging material, mainly used for rapid plugging and structural reinforcement.Read more

    SikaFix® HH+ - Polyurethane Grouts


    Sika USA
    https://usa.sika.com › ... › SikaFix® HH+
    Sika USA
    https://usa.sika.com › ... › SikaFix® HH+
    Easy to apply, one component with accelerator · Hydrophobic, only a small amount of water is needed for reaction · Expands up to 30 times the liquid volume · Non- ...Read more
    People also ask
    What is hydrophobic polyurethane?
    Hydrophobic polyurethane is usually used to fill voids and stabilize soil because of its low viscosity, high expansion rate, and ability to set up under wet conditions without diluting. When injected into loose soil or voids, it expands to form a rigid foam that displaces any water present.

    Learn the differences and advantages of hydrophilic and hydrophobic grouts


    Prime Resins
    https://www.primeresins.com › estimating-tools-info › hy...
    Prime Resins
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    How waterproof is oil-based polyurethane?
    “Oil-based polyurethane can protect the wood surfaces from moisture very effectively as it forms a fine water-resistant barrier,” Jay Sanders, of Castle Dream Construction, says. O'Keefe cautions that wiping up spills sooner rather than later is still best, since it's technically water-resistant rather than waterproof.Jun 5, 2024

    Is Polyurethane Waterproof? - Family Handyman


    Family Handyman
    https://www.familyhandyman.com › article › is-polyuret...
    Family Handyman
    https://www.familyhandyman.com › article › is-polyuret...
    Is PU hydrophilic?
    In terms of its wettability, PU is not totally hydrophilic and not totally hydrophobic. The range of its potential applications will increase if it can change from a more hydrophilic to a more hydrophobic characteristic. Hence, making it a superhydrophobic compound is extremely difficult [16,34].Apr 17, 2023

    Hydrophobic, Mechanical, and Physical Properties of Polyurethane ...


    PMC - NIH
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10141087
    PMC - NIH
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10141087
    Is PU foam hydrophobic?
    The reason it is considered hydrophobic foam, is because it exhibits low water absorption. This proves extremely useful in applications in which moisture (water, dew, humidity, sweat) is considered a factor.

    Hydrophobic Energy Absorbing PU Foam | Poly Labs | Polyurethane


    Poly Labs
    https://polyurethanelaboratories.com › polyurethane-foam
    Poly Labs
    https://polyurethanelaboratories.com › polyurethane-foam

    Web results

    Hydrophobic vs Hydrophilic Polyurethanes - The Difference


    Alchatek
    https://info.alchatek.com › blog › hydrophobic-vs-hydro...
    Alchatek
    https://info.alchatek.com › blog › hydrophobic-vs-hydro...
    Aug 24, 2023 — Hydrophobic polyurethanes naturally repel water (similar to the way oil would repel water and stay separate if you were trying to mix them in a glass).Read more

    A novel inherently hydrophobic and physicomechanically ...


    Nature
    https://www.nature.com › scientific reports › articles
    Nature
    https://www.nature.com › scientific reports › articles
    by JJJB Paraguya · 2025 — A novel inherently hydrophobic and physicomechanically robust coconut oil-based polyurethane-modified mortar. Sci Rep 15, 40664 (2025) ...Read more
    Missing: Soluble ‎| Show results with: Soluble

    It is one component oil-soluble polyurethane hydrophobic ...


    Sinograce Chemical
    https://www.sinogracechem.com › one-component-oil-so...
    Sinograce Chemical
    https://www.sinogracechem.com › one-component-oil-so...
    It is one component oil-soluble polyurethane hydrophobic foam, it reacts with water and expands to be a foam does not dissolve in the water.Read more

    Aluminum oxide-based hydrophobic polyurethane ...


    ScienceDirect.com
    https://www.sciencedirect.com › science › article › pii
    ScienceDirect.com
    https://www.sciencedirect.com › science › article › pii
    by M Vinu · 2025 · Cited by 4 — Experimental results demonstrated that the fabricated alumina oxide-based polyurethane sponges (PUSs) exhibited hydrophobic and oleophilic properties, along ...Read more
    Missing: Soluble ‎| Show results with: Soluble

    Vegetable Oil-Modified, Hydrophobic Polyurethane ...


    Google Patents
    https://patents.google.com › patent
    Google Patents
    https://patents.google.com › patent
    Aqueous hydrophobic polyurethane dispersions are made from urethane prepolymers derived from reacting constituents including at least one polyisocyanate, ...

    Waterproof Coating Liquid Oil-Soluble Polyurethane ...


    Jiangxi Zhengjie New Material Co., Ltd.
    https://jxzhengjie.en.made-in-china.com › product › Ch...
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    SPU911 water-based polyurethane waterproof coating is a kind of waterproof material. It is an environmentally friendly polymer elastic waterproof material.Read more
    $1.10 · In stock · 5.0 · Review by MIC_BUYER · Free delivery

    Hydrophobic Oil Soluble Polyurethane Grouting Material


    Alibaba.com
    https://www.alibaba.com › product-detail › Hydrophobi...
    Alibaba.com
    https://www.alibaba.com › product-detail › Hydrophobi...
    It is used for deformation cracks in the basement of buildingsstructural joints of construction joints, waterproof plugging andreinforcement of the inner walls ...Read more
    $266.00 · Out of stock · 3.6(4)

    Preparation and Properties of Hydrophobic Polyurethane ...


    National Institutes of Health (.gov)
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10096977
    National Institutes of Health (.gov)
    https://pmc.ncbi.nlm.nih.gov › articles › PMC10096977
    by Y Ma · 2023 · Cited by 27 — Moreover, the hydrophobicity of the coating film is best when the silicon content is 10% of the acrylic monomer mass and the water contact angle ...Read more
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