Sealtest Logo and Tagline Sealtest Dairy is a Good Humor-Breyers brand for dairy products. Formerly a division of National Dairy Products Corporation of Delaware, it produced milk, cream, ice cream, and lemonade. Info \tProduct type : Dairy products \tOwner : Unilever \tIntroduced : 1940 \tMarkets : United States, Canada \tWebsite : Sealtest.ca Sealtest Tagline / Slogan \tOut of this world. \tAlways fresh and wholesome. Sealtest Logo Sealtest Logo Tags : Sealtest Logo, Sealtest Tagline, Sealtest Slogan, Sealtest ad slogan.