🔍 Key Concepts
• Fire class definitions for A, B, C, and D
• What types of materials are considered ordinary combustibles, flammable liquids, electrical fires, and metal fires
• How rubber and plastic materials are usually classified in fire prevention training
💭 Think About
• First, decide what general type of material rubber gasket material is: is it more like wood/paper, a liquid fuel, energized electrical gear, or metal?
• Think about which fire class typically includes many synthetic solids such as plastics, rubber, and similar materials.
• Ask yourself: if this rubber gasket pile caught fire, what kind of extinguishing agent would normally be recommended (water, foam, dry chemical, special metal agent)? That often matches the class.
✅ Before You Answer
• Review a standard list of NFPA fire classes (A, B, C, D) and the examples given for each.
• Verify which class covers solid combustible materials such as wood, cloth, paper, and many forms of rubber and plastic.
• Confirm that the class you choose is NOT defined primarily by electrical equipment or flammable liquids or combustible metals, since rubber gaskets are none of those.