When timer (4) stops remove sealing iron (1) and cool the material down with Cooling block (5)
After the fabric cools, peel fabric apart. A positive test will have around 85% of either material
on the opposite piece of fabric. If test fails, allow sealing iron to heat up longer and retest.
Clean the damaged area with a rag dampened with alcohol before repairing. Allow the alcohol
ample time to dry so that the surface is not wet when the new assembly is installed.
If there is any exposed Kevlar thread after removing the old Dee Ring, a piece of 5 MILS thick
clear plastic must be applied to the new Dee Ring patch. Apply the plastic by laying the new
Dee Ring on top of sealing block (2), place the plastic on top of the Dee Ring and then place a
piece of silicone paper (3) on top of the entire assembly. Apply the sealing iron (1) and heat for
30 seconds. There is no need to cool with damp rag.
Deflate the area of the ABS to be repaired (reference TM 10-5410-228-10). Place a sealing block
(2) on the inside of the ABS so that the material to be repaired lays flat on the sealing block (2).
Position the new assembly over the old Dee Ring assembly. Cover the new assembly with a piece
of silicon paper (3) to prevent staining.
Sealing irons operate at high temperatures. Use care to prevent injury to personnel
Heat seal repairs may produce toxic fumes. To prevent injury to personnel, use in well
ventilated area. This warning applies to steps 4 and 5.
Sealing block will have to be supported to prevent sealing iron from moving when pressure is
Place sealing iron (1) against the new assembly and apply pressure for 1.50 seconds to weld the
new assembly to the ABS.
(10) Remove the sealing iron (1) and press cooling block (5) against the hot area for 15 to 20 seconds
or wipe with cold wet rags to draw out the heat.
(11) Repeat the sealing and cooling process until the entire new assembly is sealed in place. Ensure
that all edges and corners are totally sealed.
(12) After the repaired area has cooled, check all edges and corners to ensure that the new assembly
is securely bonded. If any edges or corners are loose, repeat sealing process.
(13) Inflate ABS (reference TM 10-5410-228-10).