Title: Johns-Manville Documentation: J-M Sealing Compounds
Publication Date: 1953
Navaseal (For Marine Use) is described. It says, "Navaseal is a black, odorless, asbestos-base sealing compound of stiff putty consistency developed for the sealing aboard ships of electrical duct services and other irregular apertures to prevent passage of moisture, fumes, vermin, or foreign matter." It meets military specification MIL-I-3064 Grade H. It says that it will not harm workmen's hands.
J-M Sealing Compounds
This document is 1 sheet, printed on front and back. It is dated April 1953.
Other products described (although not as containing asbestos) include: Uniseal, Duxseal, Paxseal, Tranolseal, Nodrseal
Condition: Good. Hole-punched for use in a binder.