| Description | D-shaped rubber seals are a common and efficient rubber gasket seal widely used in various applications and industries to prevent the ingress of air, water, dust, dirt, and debris, as well as other elements, while also reducing noise and vibration. This D-shaped rubber seal strip is named from its cross-sectional shape, which resembles the letter "D" –usually flat at the bottom for easy bonding (adhesive backing is optional), and a half-round shape or specially designed shapes at the top, which can directly form a good compression effect on two surfaces, forming a tight and reliable weatherproof seal. Many D-shaped weatherstrips come with self-adhesive backings, making them relatively simple to peel and stick into place without special tools or messy adhesives. EPDM (ethylene propylene diene monomer) sponge rubber is commonly used to manufacture D-shaped sealing strips due to its excellent water resistance, weather resistance, ozone resistance, and aging resistance. Our extruded EPDM rubber strips are suitable for various indoor and outdoor applications and industries to provide excellent sealing effects, such as automotive, construction, marine, electrical cabinets, etc. Guangdong Zhongxiang uses the highest quality materials on the market and can customize EPDM sponge rubber compound formulas to make D-shaped EPDM sponge rubber seals of various hardnesses, shapes, and sizes. We can also manufacture with EPDM materials with fire retardant and other special properties. Our factory can help you produce custom seal strips for any purpose and provide a tailored solution for your application. |
| Advantage | High-quality EPDM Materials Superior Sealing Capability Good impact absorption Good weathering, UV, and ozone resistance Effective Noise and Vibration Reduction Highly durable and flexible Easy to install (with a self-adhesive backing optional) Material Variety for Specific Needs |
| Resistance to | Ozone – Excellent UV light – Excellent Extreme Temperatures – Excellent Weathering – Excellent Sunlight Aging – Excellent |
| Material | Sponge EPDM Rubber, Foam EPDM Rubber |
| Hardness (Shore A) | 25 ±5 Durometer as standard, or per request. |
| General temperature range | -40°F to 220°F |
| Tensile strength | 1450 PSI min |
| Custom options | Materials, Color, Hardness, Density, sizes, and profile. Different widths and lengths are available for window and panel dimensions. |


