D-Shape Extruded Seals

D-shape extruded seals are versatile sealing profiles characterized by a half-moon bulb shape on top and a flat mounting base. This design enables an effective, soft seal under compression, making them ideal for weatherstripping, noise reduction, and vibration damping in various industrial applications.
Key Features and Benefits
Effective Sealing: The bulb compresses to create a tight barrier against air, water, dust, and other contaminants, even when sealing uneven gaps or surfaces.
Versatile Mounting: The flat base is often designed for peel-and-stick installation using pressure-sensitive adhesives, simplifying installation without mechanical fasteners.
Vibration and Noise Reduction: D-shape seals help eliminate vibration and drown out noise due to their cushioning properties.
Durable Design: Available in solid or hollow profiles, they offer good resistance to compression set and weather damage.
Customizable: They come in various heights and widths and can be cut to specific lengths for bespoke requirements.
Common Materials
Material selection depends heavily on the operating environment and required resistances:
EPDM (Ethylene Propylene Diene Monomer): The most frequent choice for weatherstripping due to its excellent resistance to ozone, UV radiation, sunlight aging, water absorption, and low temperatures.
Silicone Rubber: Offers superior performance in extreme high and low temperatures, good chemical resistance, and is often FDA-compliant for medical and food industry use.
Nitrile (NBR / Buna-N): An excellent choice when oil and fuel resistance are the primary concerns, used in industrial equipment and fuel systems.
Chloroprene (Neoprene®): Provides a balanced resistance profile, including good water, flame, and moderate oil resistance, often used in marine and HVAC applications.
Applications
D-shape extruded seals are widely used across diverse industries for sealing and protection:
Automotive and Marine: Used as door, trunk, hood, and hatch seals in cars, trucks, RVs, trailers, and boats.
Construction: Applied in doors, windows, and curtain walls for weatherproofing and insulation.
Industrial Equipment: Employed in equipment enclosures, machinery access panels, and electrical housings to protect sensitive components from environmental elements.
Medical and Food Processing: Specific FDA-compliant silicone grades are used in equipment requiring hygienic, high-temperature, or chemical-resistant seals.