Slow Cooking Liners vs Slow Cooker Liners: which is safer?

Slow Cooking Liners is the clear pick. Reynolds Slow Cooker Liners carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Slow Cooking Liners

If You Care

Slow Cooking Liners

PFAS grade

A 100/100

Overall grade

B 88/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Unbleached parchment paper

Confidence

78%

PossibleThermal degradation and smoke at high heat

PossibleMold or bacterial growth if stored wet or damp

PossibleAdhesion failure and paper fragments in food

Why this gradeBuy
Reynolds Slow Cooker Liners

Reynolds

Slow Cooker Liners

PFAS grade

F 15/100

Overall grade

F 0/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Plastic film liner (composition unspecified)

Confidence

35%

PossiblePlasticizer and additive migration

PossibleThermal degradation and microplastics

PossibleUnidentified additives (opacity agents, stabilizers)

Why this grade

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More slow cooker liners: see the full ranking