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From reading the question, I suspect the OP understands "sealing" to be the verb described by the description "apply a nonporous coating to (a surface) to make it impervious.". When they talk abou...
Answer
From reading the question, I suspect the OP understands "sealing" to be the verb described by the description "apply a nonporous coating to (a surface) to make it impervious.". When they talk abou...