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Co-Extruded Rubber Flap Seals

Co-extruded waterproof rubber seal with flap

What are Co-Extruded Trim Seals?

Co-extruded trim seals fuse together a dense or rigid material to create a strong attachment with a reliable seal. Co-extruded flap seals combine a dense EPDM edge trim, with an integrated aluminum metal clip and a strong gripping tongue, with a less dense EPDM rubber flap.

Rubber Flap Seal Use Cases

Whether your industry is marine, automotive, construction or a variety of other industries, Trim-Lok’s co-extruded trim seals are ideal for:

  • • Watertight seals in boat hatches
  • • RV compartment doors
  • • Toolboxes
  • • Tonneau covers
  • • And more

These waterproof rubber seals can withstand harsh temperatures, ranging from -20°F to 158°F, which makes them ideal for a range of additional use cases and applications.

How to Install a Rubber Flap Seal

For installation, first determine the proper size and bend radius. Learn how to install co-extruded trim seals by watching a demonstration video.

Watch the Video

Why Choose Trim-Lok?

Since 1971, Trim-Lok has been the number one source for sealing rubber extrusions. We proudly manufacture our products in the United States and work hard to uphold our reputation for excellence, innovation, and dependability.


DDA1501

DDA1501

EPDM Co-Extruded Flap-Seal Clamping Range: .039"-.099"

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DD1201

DD1201

EPDM Co-Extruded Flap-Seal Clamping Range: .050"-.090"

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DD6190

DD6190

EPDM Co-Extruded Flap Seal Clamping Range: .197"-.250"

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DD6126

DD6126

EPDM Co-Extruded Flap-Seal Clamping Range: .050"-.100"

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