A curable two part sealant composition comprising a first component and a second component: wherein the sealant composition is a two-part room temperature vulcanizing silicone composition curable in the presence of moisture; said first component comprising: (a) a diorganopolysiloxane in an amount ranging from 5 weight percent to 80 weight percent of the total composition wherein the silicon atom at each polymer chain end is silanol terminated; (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; said second component comprising: (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; (c) an alkylsilicate in an amount ranging from 0.1 weight percent to 10 weight percent of the total composition; (d) a condensation catalyst in an amount ranging from 0.001 weight percent to 1 weight percent of the total composition; and (e) an alkoxysilane adhesion promoter in an amount ranging from 0.1 weight percent to 20 weight percent of the total composition; wherein the weight ratio of first component to second component is approximately 13 to 1; and, wherein said sealant composition has a green strength of from 6,895 kPa [1 psi] to 517,1 kPa [75 psi] as measured by WPSTM test C-1221 after curing for a time period of from 1 minute to 60 minutes. wherein the sealant composition is a two-part room temperature vulcanizing silicone composition curable in the presence of moisture; said first component comprising: (a) a diorganopolysiloxane in an amount ranging from 5 weight percent to 80 weight percent of the total composition wherein the silicon atom at each polymer chain end is silanol terminated; (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; (a) a diorganopolysiloxane in an amount ranging from 5 weight percent to 80 weight percent of the total composition wherein the silicon atom at each polymer chain end is silanol terminated; (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; said second component comprising: (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; (c) an alkylsilicate in an amount ranging from 0.1 weight percent to 10 weight percent of the total composition; (d) a condensation catalyst in an amount ranging from 0.001 weight percent to 1 weight percent of the total composition; and (e) an alkoxysilane adhesion promoter in an amount ranging from 0.1 weight percent to 20 weight percent of the total composition; (b) diorganopolysiloxane in an amount ranging from 5 weight percent to 35 weight percent of the total composition wherein the silicon atom at each polymer chain end is alkyl terminated; (c) an alkylsilicate in an amount ranging from 0.1 weight percent to 10 weight percent of the total composition; (d) a condensation catalyst in an amount ranging from 0.001 weight percent to 1 weight percent of the total composition; and (e) an alkoxysilane adhesion promoter in an amount ranging from 0.1 weight percent to 20 weight percent of the total composition; wherein the weight ratio of first component to second component is approximately 13 to 1; and, wherein said sealant composition has a green strength of from 6,895 kPa [1 psi] to 517,1 kPa [75 psi] as measured by WPSTM test C-1221 after curing for a time period of from 1 minute to 60 minutes.