Made of fiberglass, these seals are woven tighter than High-Temperature Ultra-Conformable Slotted Edge Seals for increased durability. Also known as drop-warp and bolt-hole tape, they have openings along the center to accommodate bolts and rivets. Use them on metal flanges, as well as on oven, furnace, and boiler doors. They resist grease, oil, hydraulic fluid, and solvents.

Adhesive-back seals will stay in place until you permanently secure them, making them the best choice when installing in confined spaces.