Whether you should use a brush door seal or rubber seal depends on the specific application and the environment you are trying to protect against. Both types of seals have their advantages and disadvantages, and the choice between the two will depend on your specific needs. Brush door seals are made from a flexible material, such as polypropylene or PVC, that is mounted on a backing, such as aluminum or stainless steel. The bristles of the brush are designed to fill gaps and create an effective barrier against air and moisture infiltration. Brush door seals are typically more effective in situations where the gap between the door and the frame is larger, or where there is a need for a more flexible seal that can conform to irregular shapes. Rubber seals, on the other hand, are made from a flexible rubber material that is designed to compress and seal against the surface. Rubber seals are typically more effective in situations where the gap between the door and the frame is smaller and where a tight, airtight seal is required. Rubber seals are also typically more durable and long-lasting than brush door seals. When choosing between brush door seals and rubber seals, there are several factors to consider, including: Gap size: If the gap between the door and the frame is larger, a brush door seal may be more effective, while if the gap is smaller, a rubber seal may be a better choice. Environmental conditions: If you are trying to protect against harsh environmental conditions, such as wind, rain, and dust, a rubber seal may be a better choice, as it will provide a more airtight seal. Flexibility: If you need a flexible seal that can conform to irregular shapes, a brush door seal may be a better choice, while if you need a tight, airtight seal, a rubber seal may be a better choice. Durability: If you need a durable seal that can withstand exposure to the elements, a rubber seal may be a better choice, as it is typically more durable and long-lasting than a brush door seal.