A system for sealing an electrical terminal, comprising: (a) a device (100, 200) for sealing a plurality of electrical wires to a wire attachment portion of an electrical terminal, wherein the device (100, 200) further includes: (i) a first piece of shrinkable tubing (102, 202) having a predetermined length, wherein the first piece of shrinkable tubing (102, 202) is for placing over the plurality of electrical wires such that one end thereof extends over the wire attachment portion of the electrical terminal; (ii) a high viscosity layer (104, 204) placed within the first piece of heat shrink tubing (102, 202) adjacent to the one end of the first piece of heat shrink tubing (102, 202); and (iii) a band of a low viscosity sealant/adhesive (106, 206) placed within the first piece of heat shrink tubing (102, 202) and adjacent to the high viscosity layer (104, 204) such that low viscosity sealant/adhesive (106, 206) is further away from the one end of the first piece of shrinkable tubing (102, 202); (b) wherein the device (100, 200) is adapted so that upon the application of heat to the device (100, 200) after installation of the device (100, 200) over the electrical terminal, the first piece of shrinkable tubing (102, 202) starts to recover, the high viscosity layer (104, 204) seals the one end of the first piece of shrinkable tubing (102, 202) and the low-viscosity sealant/adhesive (106, 206) flows across and through the plurality of electrical wires creating a seal, wherein the high viscosity layer (104, 204) prevents flow of the low-viscosity sealant/adhesive (106, 206) from contaminating the electrical terminal; and characterised in that (c) the high viscosity layer (104, 204) is a second piece of shrinkable tubing (104, 204) having a predetermined length, the second piece of heat shrinkable tubing (104, 204) is a double-walled system that includes an outer layer and an inner layer, and wherein the inner layer includes a high-viscosity adhesive. (a) a device (100, 200) for sealing a plurality of electrical wires to a wire attachment portion of an electrical terminal, wherein the device (100, 200) further includes: (i) a first piece of shrinkable tubing (102, 202) having a predetermined length, wherein the first piece of shrinkable tubing (102, 202) is for placing over the plurality of electrical wires such that one end thereof extends over the wire attachment portion of the electrical terminal; (ii) a high viscosity layer (104, 204) placed within the first piece of heat shrink tubing (102, 202) adjacent to the one end of the first piece of heat shrink tubing (102, 202); and (iii) a band of a low viscosity sealant/adhesive (106, 206) placed within the first piece of heat shrink tubing (102, 202) and adjacent to the high viscosity layer (104, 204) such that low viscosity sealant/adhesive (106, 206) is further away from the one end of the first piece of shrinkable tubing (102, 202); (i) a first piece of shrinkable tubing (102, 202) having a predetermined length, wherein the first piece of shrinkable tubing (102, 202) is for placing over the plurality of electrical wires such that one end thereof extends over the wire attachment portion of the electrical terminal; (ii) a high viscosity layer (104, 204) placed within the first piece of heat shrink tubing (102, 202) adjacent to the one end of the first piece of heat shrink tubing (102, 202); and (iii) a band of a low viscosity sealant/adhesive (106, 206) placed within the first piece of heat shrink tubing (102, 202) and adjacent to the high viscosity layer (104, 204) such that low viscosity sealant/adhesive (106, 206) is further away from the one end of the first piece of shrinkable tubing (102, 202); (b) wherein the device (100, 200) is adapted so that upon the application of heat to the device (100, 200) after installation of the device (100, 200) over the electrical terminal, the first piece of shrinkable tubing (102, 202) starts to recover, the high viscosity layer (104, 204) seals the one end of the first piece of shrinkable tubing (102, 202) and the low-viscosity sealant/adhesive (106, 206) flows across and through the plurality of electrical wires creating a seal, wherein the high viscosity layer (104, 204) prevents flow of the low-viscosity sealant/adhesive (106, 206) from contaminating the electrical terminal; and characterised in that (c) the high viscosity layer (104, 204) is a second piece of shrinkable tubing (104, 204) having a predetermined length, the second piece of heat shrinkable tubing (104, 204) is a double-walled system that includes an outer layer and an inner layer, and wherein the inner layer includes a high-viscosity adhesive.