A crossmember module for attachment under an instrument panel of a motor vehicle. More particularly, these herbal compositions comprise an effective amount of an enriched Boswellia extract containing from 10% to 99% by weight of 3-0-acetyl-11-keto-\u03b2-boswellic acid; and an effective amount of a second extract selected from the group consisting of an extract of Aegle marmelos, an extract of Zingiber officinale, an extract of Garcinia mangostana, and mixtures thereof. The seal structure has a body having first and second opposing surfaces and a plurality of flexible seal members integral with and extending generally transversely with respect to a second surface of the body.