Stack Gasket Large 3 1/2″ x 19″ (631219)

Large Stack Gasket – 3-1/2″ x 19″ | 631219 | B-57 Big Stack GasketSeal uneven stove-to-stack connections with the 631219 Large Stack Gasket. Designed for use with the 9S17312 transition stack (3-1/2″ x 17″ x 8″ round), this high-temperature fiberglass gasket ensures a tight, leak-proof seal between your stove and flue system. Perfect for installations where precision sealing is critical to safety and performance.Key Features:OEM Fit – Designed specifically for the 9S17312 transition stackHigh-Temp Fiberglass – Withstands high heat and pressure without breaking downAir-Tight Seal – Prevents smoke leaks and helps maintain proper stove draftEasy Installation – May require T-bolts or tie-downs for secure mountingProduct Specifications:Part Number: 631219Also Known As: B-57 Big Stack GasketInner Dimensions: 3-1/2″ x 17″Outer Dimensions: 4-5/8″ x 19″Material: Heat-resistant fiberglassApplication: Stack-to-pipe transition sealCompatible Stove Brands:BuckCraftCarolinaAppalachianHawkeLilly StovesSilent FlameSquireLong ManufacturingAnd many others—refer to your owner’s manual for part number compatibilityWhen to Replace:During new stove or stack installationIf the current gasket shows cracks, wear, or air leaksAs part of routine maintenance to ensure proper sealingEnsure safe, efficient operation with the 631219 Large Stack Gasket. Order today for a reliable fit and improved heating performance in your stove system!