Technical data

13773-001
20-10
Page 930 Nov 2000
(1) Acquire necessary tools, equipment, and supplies.
(2) Hand Mixing Mil-S-38249, Type I Firewall Sealant.
(a) Weigh the amount of base material desired into a clean, wax free container. Mix in accor-
dance to the noted ratios.
• For P/S 700 sealant, add accelerator to the base material at the ratio of 2.5 parts by
weight of accelerator to 100 parts by weight of the base. Application life of P/S 700 is 2
hours when used at 75° F(24° C).
• For PR-812 firewall sealant, add accelerator to the base material at a ratio of 2.5 parts by
weight of accelerator to 100 parts by weight of the base. Application life of PR-812 is 8
hours when used at 75° F (24° C).
(b) Stir as required to thoroughly mix the two components. After thorough and proper mixing,
the mixed sealant shall be uniform in color and viscosity.
Note: Be sure to scrape the sides and bottom of the container in order to include
all the base material in the mixture and to ensure uniform blending. Scrape
mixing paddle on container sides periodically to ensure all material, includ-
ing that on paddle, is mixed.
Note: The MIL-S-38249 firewall sealant has a one year storage life when stored at
temperatures below 80°F(26.5° C) in their original unopened containers.
(3) Hand Mixing Mil-S-8802, Type II, Class A Brushable Fuel Tank Sealant.
Sealant is furnished in premeasured and proportioned kits. If the entire kit is not needed they
can be proportioned by combining ten parts of the base compound with one part accelerator (by
weight). Use an accurate scale when mixing base and accelerator.
(a) Stir the accelerator to absorb all floating liquid before it is mixed with the sealant. The
accelerator can then be poured into the container of sealant for mixing, otherwise, a wax-
free container must be used.
(b) Thoroughly stir accelerator in its container until even consistency is obtained.
Description P/N or Spec. Supplier Purpose
Clean, Wax Free Con-
tainer
- Any Source Hand mix sealant
Spatula - Any Source Hand mix sealant
Scales, Accuracy ± 2% - Any Source Proportion sealant
Rotary Mixer 1384 Semco Application Sys-
tems
PRC-DeSoto Intl Inc.
Glendale, CA
MIx Mil-S-8802 Class
A sealant
Extrusion Gun Cartridge - Any Source Load sealant
Protective Gloves - Any Source Protect hands from
chemicals
Goggles - Any Source Protect eyes from
chemicals