Product Overview
Designed to establish permanent leak-proof connections in PVC piping systems, our Rubber Sealing Gasket represents the gold standard in fluid containment for critical infrastructure. Combining chemical compatibility with PVC materials and exceptional compression set resistance, these gaskets are engineered to withstand the dual challenges of aggressive chemical exposure and extreme temperature fluctuations—common in water treatment, chemical processing, and agricultural irrigation systems. Crafted from select elastomers (EPDM or NBR rubber) based on application needs, they feature a self- lubricating surface (incorporating food-grade silicone additives) that simplifies installation, reducing the risk of damage during assembly. With customizable cross-sections (round, square, D-shaped, or bulb-type) and precision molding, they ensure a tight seal in socket joints, flange connections, and threaded fittings, eliminating the need for messy adhesives or sealants.
Product Specifications
Parameter | Value |
Material | EPDM rubber (ethylene propylene diene monomer) or NBR rubber (nitrile butadiene), with FDA-compliant grades for potable water |
Temperature Range | -50°C to 150°C (EPDM, continuous), -40°C to 120°C (NBR, continuous) |
Pressure Rating | Up to 16 bar (PN16) for EPDM, 10 bar (PN10) for NBR at 20°C |
Chemical Resistance | Resistant to acids (pH 2–12), alkalis, chlorinated solvents, and PVC plasticizers |
Standard Sizes | DN15 to DN600 (ISO 6182-1/2), compatible with ASME B16.21, DIN 8062 flanges |
Certifications | WRAS (BS 6920:2014 for water contact), NSF/ANSI 61 (drinking water safety), REACH compliant |
Features
PVC Material Compatibility: Formulated to resist PVC stabilizers, plasticizers (phthalates), and solvents used in pipe manufacturing, preventing swelling, hardening, or embrittlement that leads to leaks. Undergoes 1000-hour compatibility testing with PVC pipe extracts.
Hermetic Sealing Performance: Achieves IP68-rated watertightness (submersion up to 10m for 24 hours) in submerged pipelines, critical for wastewater treatment plants, swimming pool systems, and underground drainage networks.
Simplified Installation: Snap-fit design with beveled edges reduces assembly time by 30% compared to adhesive-based seals, while the self-lubricating surface minimizes friction during pipe insertion, lowering installation force by 25%.
Long-Term Durability: EPDM variants offer 50+ years of service life in buried pipelines (per ISO 9080 soil simulation testing), with compression set ≤20% after 10,000 hours at 70°C—outperforming traditional rubber gaskets by 2–3x.
Cost-Efficient Customization: Available in standard and custom profiles with no tooling fees for orders over 500 units, supporting specialized applications like irregular flange shapes or high-pressure service.
Applications
Water Treatment & Distribution: Sealing ball valves, butterfly valves, and couplings in municipal water systems, desalination plants, and chlorinated water pipelines (resistant to chlorine up to 5 ppm).
Chemical Processing: Handling corrosive fluids (acids, alkalis, solvents) in pharmaceutical reactors, chemical storage tanks, and industrial waste treatment lines.
Agricultural Irrigation: Ensuring leak-free connections in PVC sprinkler systems, drip irrigation lines, and fertilizer distribution pipes, with UV-stabilized variants for outdoor use.
Marine & Coastal Engineering: Sealing PVC pipes in offshore platforms, boat hulls, and desalination plants, resisting saltwater immersion and marine growth.
