Dock Seals Ask An Expert Request a Quote Request Service Or give us a call: 1-888-606-9415 A Dock Seal is essentially a large padded seal for your loading dock door perimeter. It is designed to efficiently seal the perimeter space between the truck trailer and the loading dock walls. Dock seals are ideal for cold storage, food, pharmaceutical and other applications where a barrier against energy loss, dirt and pests is a must. They are also an excellent option for facilities that are subject to product shrinkage. They minimize shrinkage by preventing warehouse personnel from slipping product outside the facility via the space between truck trailers and loading dock walls. Dock seals are typically used on doors that are equal to or smaller than 9′ wide by 10′ high. For larger doors, dock shelters are the usual recommendation. Speak with your McKinley expert in order to design the correct dock seal with the longest wear-life for your needs.