Premium Rubber Gaskets | Essential Sealing Components for Ductile Iron Pipeline Fittings
Jul. 09, 2026
Rubber gaskets are crucial sealing accessories designed to work with our full range of ductile iron pipeline products, including DI dismantling joints, T-type ductile iron pipes, manhole covers, and various flanged pipe fittings. As key components in preventing pipeline leakage, high-performance rubber gaskets provide a tight elastic seal between flange contact surfaces, buffer pipeline vibrations, compensate for minor assembly gaps, and ensure the long-term stable operation of municipal water supply and sewage systems.
We offer three primary rubber materials tailored to different engineering conditions: EPDM, NBR, and SBR. All of our gaskets are produced using high-purity raw rubber, free from recycled inferior materials, and comply with international water supply hygiene standards.
EPDM rubber gaskets are our best-selling option for clean drinking water projects. They feature outstanding resistance to UV, ozone, and aging, along with a wide temperature range from -50℃ to 150℃, and strong tolerance to acidic and basic water media. They meet NSF61 drinking water safety certification, making them ideal for urban potable water pipeline networks and outdoor buried pipelines.
NBR rubber gaskets excel in resistance to oil and sewage, offering stable sealing performance when in contact with industrial wastewater, oily wastewater, and neutral chemical liquids. They are widely used in sewage treatment plants, industrial pump stations, and pipelines for chemical fluid conveyance.
SBR rubber gaskets provide a balanced cost-performance ratio, good elasticity, and abrasion resistance, making them suitable for conventional urban drainage pipelines and general low-budget municipal projects. They serve as standard matching spare parts for bulk export orders.
Our rubber gaskets are available in a complete range of specifications to fit DN50-DN3000 pipe fittings. This includes flat flange gaskets, circular ring gaskets, and special silent sealing strips for manhole covers. Precision mold forming ensures uniform thickness, stable rebound elasticity, and excellent compression recovery. Our gaskets will not harden, crack, or lose sealing performance after prolonged underground exposure and vehicle vibration.
Each batch of rubber gaskets undergoes compression aging and water-tightness testing before delivery to eliminate hidden leakage issues for overseas engineering projects.
We also offer customized services. We can adjust the rubber hardness, thickness, shape, and size according to client specifications and project standards. Additionally, we can provide customized color marking for easy on-site classification. When customers order ductile iron pipes, DI dismantling joints, and other pipe fittings in bulk, we can supply matching rubber gaskets in one-stop packaging, simplifying the procurement process and reducing overall delivery times.
For packaging and logistics, our rubber gaskets are packed in sealed, moisture-proof plastic bags and cartons to prevent oxidation and deformation during long sea transport. Being matched with our complete ductile iron pipeline product line, rubber gaskets have been exported to Southeast Asia, the Middle East, Europe, and Africa. Our stable mass production capacity ensures that we maintain sufficient inventory year-round, whether for small trial gasket orders or large bulk shipments for infrastructure projects.
If you need rubber gaskets matched to your pipeline engineering projects, please provide details such as pipeline caliber, medium type, and working temperature parameters. Our technical team will recommend the most cost-effective rubber material solution and provide competitive factory-direct prices.
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