Sealer

Sealer may refer either to a person or ship engaged in seal hunting, or to a sealant; associated terms include:

Seal hunting

 * Sealer Hill, South Shetland Islands, Antarctica
 * Sealers' Oven, bread oven of mud and stone built by sealers around 1800 near Albany, Western Australia
 * Sealers Passage, marine channel in the South Shetland Islands, Antarctica
 * Sealers' War, conflict in southern New Zealand started by sealers in 1810

Sealant

 * Concrete sealers, products applied to concrete to protect it from corrosion
 * Heat sealer, machine using heat to seal products
 * Stone sealer, surface treatment product to retard staining and corrosion in natural stone