NMFC 70220 - Flintstone or Silica Linings | Class 50

To find the correct freight class for your shipment:

1. List NMFC 70220, Class 50 on the BOL and match the actual pack to boxes or crates; note if shipping silex bricks, tiles, or preformed liners.
2. Individually wrap flint/silica pieces with foam or corrugated pads, fill voids, and use edge protection—these are dense yet brittle components.
3. For crates, add cleats and internal bracing, then band the crate to a pallet; mark Do Not Stack for tall sets, e.g., a 1,800 lb crated silex liner kit.
4. Keep contents dry and dust-contained with a poly liner; label as Mineral Linings — Non-Haz and include a piece-count packing list for quick check-in.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Fixed Class 50 delivers predictable quoting and often lower LTL costs for dense stone/ceramic linings than higher-class items.
• Boxed or crated eligibility minimizes reclass risks, reducing rebills and damage claims on fragile wear parts.
• A single NMFC item streamlines TMS automation for repeat shipments to mills, mines, and ceramic plants, accelerating order-to-ship cycles.
• Non-hazardous status broadens carrier options and avoids hazmat fees, while robust packaging cuts breakage and downtime in operations.