Integrated Non-Slip Base
Rather than individual feet, some designs use a full non-slip base pad covering the entire bottom surface. This distributes weight more evenly and provides maximum grip area. More common on oven-style air fryers with larger footprints.
Foot Degradation Over Time
This is the part most people overlook. Non-slip feet are consumable components that degrade with use:
Rubber hardening: Repeated heating (from conducted heat through the base) and aging cause rubber to lose its flexibility and become hard. Hard rubber has significantly less grip than soft rubber. This process typically takes 1-3 years depending on use frequency and the rubber compound quality.
Compression set: Under the constant weight of the air fryer, rubber feet can permanently compress and flatten. Flat feet have less grip than feet with their original shape.
Adhesive failure: Feet attached with adhesive (rather than molded in) can come loose, especially if exposed to heat, moisture, or cleaning chemicals. A missing foot creates an unstable base.
Surface contamination: Oil, grease, or cleaning product residue on the feet or countertop reduces friction regardless of the foot condition.