Bulb seals are one of the most versatile types of extruded gaskets. They feature a rounded, flexible “bulb” portion that compresses to create a tight seal against air, water, dust, and noise. The design makes them highly effective in a wide range of applications where consistent sealing performance is required.

At Meltpoint Plastics, our bulb profiles can be customized in size, shape, and material depending on the performance requirements. We extrude bulbs in silicone, EPDM, and other elastomers, with options for single-material or coextruded designs.

Key Benefits of Bulb Seals:

• Excellent weather and environmental resistance

• Flexible sealing that adapts to uneven surfaces

• Available in rigid or flexible material

• Can be coextruded with multiple materials for added strength or functionality

Typical Applications:

• Windows and doors (commercial and residential)

• Automotive and marine sealing systems

• Industrial enclosures and equipment housings

• Specialty applications requiring air, water, or dust tightness