TM 1-1500-204-23-6
not less than 3 hours after exposure to air within temperature range of 69.8 to 80 6 °F (21 to 27°C). However, after 15 to
30 minutes it is difficult to remove.
g. Semi-Solid Synthetic Rubber Sealant, MIL-A-7126, for Hot-Air Ducts. This one-part, solvent-dispersed, synthetic
rubber compound is used for sealing seams in hot-air ducts to prevent leakage of hot air. This sealant is applied with
spatula or extrusion gun, and cures in 8 to 24 hours at temperature of 120 °F (48 9°C).
h.
Semi-Solid Synthetic Rubber Sealant for Engine Firewalls. This one-part, synthetic rubber, high temperature
sealant is used for sealing the firewall to prevent seepage of fluids or vapors to hazardous areas. This sealant is applied
by use of extrusion gun or spatula, and is resistant to fuel, oil, water, and weather aging.
i.
Anaerobic Adhesive MIL-R-46082. This adhesive covers single component compounds and their primers
suitable for sealing, locking, and retaining metal parts. The compounds are normally liquid and are converted to
insoluble state when confined between closely fitting metal surfaces.
Table 6-4. Application Time (Room Temperature)
Class A sealant
Class B sealant
Suffix
Application
Suffix
Application
No.
time
No.
time
-1/2
1/2 hour
-1/2
1/2 hour
-2
2 hours
-2
2 hours
-4
4 hours
-4
4 hours
-8
8 hours
-8
8 hours
-12
12 hours
Table 6-5. Cure Time (Room Temperature)
Class A sealant
Class B sealant
Suffix
Cure
Suffix
Cure
No.
time
No.
time
-1/2
10 hours
-1/2
10 hours
-2
24 hours
-2
24 hours
-4
36 hours
-4
30 hours
-8
50 hours
-8
48 hours
-12
60 hours
6-7
