Dust Seal (Prest "O" Matic) is used to seal around junction box flashings, service masts, etc. It is heavy mastic, which is flexible flashings, service, masts, ect. It is heavy mastic, which is flexible and can be pressed into any shape to form a water and airtight seal.
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Item #

Item Name

Style/Type

Package Weight

Size

LHD1 N/A (LHD1) Duct Seal N/A Non Toxic/Asbestos Free N/A 50.0000 lb. N/A
LHD5 N/A (LHD5) Duct Seal N/A Non Toxic/Asbestos Free N/A 50.0000 lb. N/A
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