Patent ID: 8372909

Claim:
A pumpable sealant for forming a moisture vapor barrier between a first substrate and a second substrate, the sealant comprising: an olefinic polymer; at least one of a silane modified APAO and a silane modified polyisobutylene; at least one filler; a carbon black wherein the carbon black is included in an amount from about 5% to about 20% by weight of the total composition; at least one of a water scavenger and a desiccant; and at least one aging resistor, and wherein the carbon black is oxidatively post treated by a furnace process and has a primary particle size of about 50 nm to about 60 nm, wherein the pumpable sealant is configured to be pumped directly onto at least one of the first and second substrates to form the moisture vapor barrier and the pumpable sealant has a volume resistivity of greater than 1×10 10 ohms·cm.