These gaskets absorb electromagnetic interference (EMI) and radio frequency interference (RFI) to prevent inaccurate signals, flickering displays, and other electrical problems. Made of foam or rubber combined with conductive material, they compress to fill gaps and complete a grounding path around doors and access panels.

Sheets work well between two flat surfaces.

Half-round gaskets work well in grooves. Use a gasket slightly thicker than the depth of the groove; it will compress to fill the gap.

P-shaped gaskets fit around doors and corners. Attach them with the nonconductive adhesive or add bolts or screws through the flange for extra security.

Urethane foam gaskets block EMI and RFI in most applications. Adhesive-back gaskets are wrapped with conductive aluminum foil and stick on with a conductive adhesive. They meet UL 94V0, so they self-extinguish within 10 seconds if they catch fire and won’t spread the fire by dripping. Plain-back gaskets are made with conductive silver wire. They meet UL 94HF1, which means they stop burning within two seconds if they catch on fire and won’t spread the fire by dripping.

Polyurethane foam gaskets are covered with a conductive nickel/copper braided fabric. A nonconductive adhesive holds them in place. To protect sensitive equipment, they block at least twice as much interference as urethane foam gaskets. They meet UL 94V0, so they self-extinguish within 10 seconds if they catch fire and won’t spread the fire by dripping. Cut these gaskets to length with scissors.