
40 hour shipping warmer
Generates heat for a minimum of 40 hours.
Specifications
- SKU: HEATPACK_40
- Rated duration: 40+ hours
- Activation: Remove the outer wrapper and expose the pack to air. It reaches working temperature within 2 hours.
- Surface temperature: May reach about 130°F (54°C)
- Cold limit: May stop working if the box drops below 32°F (0°C)
- Moisture: Doesn’t work wet: keep the pack dry
- Contents: Iron powder, activated charcoal, vermiculite, salt and water
- Safety: Not classified as hazardous under GHS
- Handling: For packing only, not for human use. Avoid direct skin contact, which can burn, and don’t open the inner pack
Heat curve
Measured on the 72 hour heat pack, which uses the same chemistry. The 40 hour shipping warmer is rated 40+ hours.
Cases and pallets
- Warmers per case: 200
- Cases per pallet: 30
- Carton size: TBC
- Carton weight: TBC
- Pallet layout: TBC
- Pallet size: TBC
Also sold in 1, 10 and 20 packs. The spec sheet lists the order code for each size.
Packaging
40 hour shipping warmer carton: render coming

Preorder the 40 hour shipping warmer
Send a bulk order request. We reply within two business days with a quote including delivered cost and lead time.