butane fuel

Each canister is described as holding 8 ounces of fuel.

Listings state a single canister will last approximately 2–4 hours, depending on heat level and stove output.

The canisters are described as having a self-sealing nozzle that prevents gas leakage when not installed.

Listings describe them as "8 ounce camping fuel for portable stoves" and note use with portable camping stoves.

The listings use the phrase "self-sealing nozzle" to describe the canister nozzle.