Semi-processed artificial resins; ebonite, namely, vulcanite; gum, raw or partly processed; rubber, raw or semi-worked; plastic substances, namely, semi-processed plastics; rubber sleeves for protecting parts of machines; non-metal seals for use in frac plugs, bridge plugs or packers, being tools for use in oil and gas wellbore; synthetic rubber; weatherstripping compositions, namely, weatherstripping sealants in the nature of caulk