D Shaped Rubber Extrusion | EPDM Sponge Rubber Seals

D-Shaped EPDM Sponge Rubber Extrusion for Weatherproofing and Gap Sealing

D-shaped rubber extrusion is a rubber sealing profile with a flat base and rounded top, designed to provide reliable sealing, cushioning, and vibration reduction in automotive, construction, marine, and industrial applications. It is commonly manufactured from EPDM, silicone, neoprene, or nitrile rubber and is available in solid or sponge forms to meet different sealing requirements.

Product Specification:

Material: EPDM
Color: Black, any other colour is available
Hardness (Shore A)： 25 ±5 as standard or per request
Specific gravity:0.5 to 0.7 g/cm3
Tensile strength: 10MPA
Temperature Range: -40 °F – 248 °F (-40°C – 120°C)
Tolerance:RMA Standard Cross-sectional Tolerance E2,or per request

Why Choose D Shaped Rubber Extrusions

Balanced Compression

The rounded bulb compresses evenly to create a reliable seal against air, water, dust, and noise. Its shape helps distribute pressure across the sealing surface, delivering consistent performance without requiring excessive closing force.

Long Service Life

D-shaped rubber extrusions maintain their shape and sealing effectiveness through repeated compression cycles. EPDM and silicone materials offer excellent resistance to compression set, weathering, UV exposure, and temperature changes for long-term durability.

Simple Installation

The flat base is easy to bond, mount, or secure with adhesive backing. This design allows for quick installation on doors, windows, enclosures, and equipment where a dependable compression seal is required.

Cost-Effective

As one of the most widely used rubber extrusion profiles, D-shaped seals are available in a broad range of standard sizes and materials. Their proven design and widespread availability make them an economical solution for many sealing applications.