Bulb Weatherstripping Seal—Bulb seals mount on the edge of one door and compress against the other. They are concealed from view when the doors are closed. Like wraparound seals, they compensate for uneven surfaces and insulate better than flat and brush seals.

Flat Weatherstripping Seal—Flat seals create a solid barrier to block drafts, light, and moisture. Mount along one door’s edge so the seal covers the other door, or mount a strip to each door so the seals overlap.

Brush Weatherstripping Seal—Brush seals are sold in pairs—one strip for each door. They have flexible bristles that interlace when the doors are closed to block light and sound. However, they’re less weathertight than the other seal types. Made with nylon seals, the bristles are durable and long-lasting. They’re also lightweight, so they won’t keep doors from opening or closing.

EPDM Seal—EPDM seals hold up to water, salt, detergents, UV light, and ozone, however they don’t withstand oil or solvents. They last longer than vinyl and stay flexible at lower temperatures.

Galvannealed Steel—Galvannealed steel seals are stronger and more rigid than plastic and rubber seals, so they are used as a barrier that keeps one door from swinging past the other. These seals can also be painted once primed.

Neoprene Seal—Neoprene seals resist abrasion.

Nylon Seal—Made of nylon, they’re strong, long-lasting, and they stand up to UV light and moisture.

Santoprene Seal—Santoprene seals resist water, sunlight, and oxidation, so they’re often used on exterior doors.

Stainless Steel—Stainless steel seals are just as rigid as steel and won’t corrode from chemicals or detergents, so they’re often used in food industry and marine environments.

Vinyl Plastic Seal—Vinyl seals are flexible, durable, and moisture resistant.

Anodized Aluminum—Anodized aluminum flanges resist corrosion and won’t tarnish even in harsh weather conditions.