Thermometer Gasket / Probe Grommet for Weber Smokey Mountain Cookers (14", 18", 22") Why this part matters Protects thermometer probe and wire from being pinched or crushed by the smoker lid, extending probe life. Creates a tighter seal where the probe enters the cooker to reduce heat loss and help maintain a consistent internal temperature. Improves cooking accuracy and repeatability — less temperature fluctuation reduces the risk of overcooking or undercooking. Key features and specifications Compatibility: Direct replacement part for Weber Smokey Mountain Cookers (14", 18" and 22"). Dimensions: 1.65" overall diameter, 1.25" hole diameter, 0.35" thickness. Sheet metal compatibility: Fits sheet metal up to 0.04" thick. Dual-entry design: Small round hole for single, smaller probes; larger notch for bigger or dual probe assemblies and cable bundles. Material: Food-grade silicone that is high-temperature resistant, flexible, durable, and provides a snug, long-lasting seal. Performance benefits Better seal reduces heat loss at the probe entry point, helping the smoker hold temperature more consistently during long cooks. Prevents wire crimping and abrasion when the lid is closed, protecting probe accuracy and longevity. Durable silicone resists high heat and repeated use without cracking or deforming. Typical uses and applications Long smoke sessions: Use when smoking brisket, pork shoulder, or ribs to protect probes and keep temperature steady over multi-hour cooks. Dual-probe monitoring: Install to feed two probe cables through one opening without interference or pinching. Replacement or maintenance: Swap into older or damaged Smokey Mountain lids to restore a tight, professional seal around the thermometer probe. Installation notes Press into the existing hole or sheet metal opening; ensure the gasket rests flush and the lid closes without trapping cables. Designed to fit the specified Weber Smokey Mountain sizes and sheet metal thickness up to 0.04". Durable, simple, and practical — a direct-fit replacement that protects probes and helps your smoker perform more consistently.