Flamemaster CS-2415 B-1/2 Gray MIL-S-38228 Type 1-1/2 Amd. 2 Spec Aluminum Exterior Sealant - Pint (12 fl oz) Can Kit

Flamemaster CS 2415 recommended for sealing external seams, depressions and gaps on aircraft to yield weathertightness and achieve aerodynamic smoothness. CS-2415 is a non-flow material and may be utilized on vertical and overhead, as well as horizontal surfaces. CS2415 is a Thixotropic, fuel resistant sealant for use on pressurized cabins.

A two component, polysulfide based, aluminum filled, non-flow, filleting material designed for  Aircraft sealing.  CS 2415 is based on  Flamemaster technology, utilizing Permapol P-5    Polymers, an improved chemical modification of Thiokol LP* polymers. Permapol P-5 polymers are covered under U.S. Patent 4,623,711.