- Plastic refractories (1)
- Glasshouse refractories (1)
- Floaters, glasshouse: clay (1)
- Melting pots, glasshouse: clay (2)
- Stoppers, glasshouse: clay (1)
- Brick, clay refractory (1)
- Fire clay blocks, bricks, tile, or special shapes (1)
- Firebrick, clay (1)
- Mortars, clay refractory (1)
