Stove Pump Cup Rubber Washer for Coleman Lantern Parts Ensure optimal performance for your Coleman stove or lantern with this high-quality replacement pump cup rubber washer. Designed for durability, this washer is crafted from premium rubber and fits securely at the end of the plunger, delivering long-lasting sealing efficiency in dual-fuel applications.  Key Features: Enhanced Durability: The precision-engineered rubber construction resists wear and maintains a tight seal, even under frequent use.  Easy Installation Tip: For extended lifespan, apply a thin layer of lubricant around the washer before installation to reduce friction and ensure smooth operation.