This replacement cap is compatible with the BROTHER TN-730, TN-760, TN-770, TN-830, TN-830XL, TN-835, TN-2410, TN-2420, TN-2430, TN-2450, TN-2510, TN-2510XL, TN-2510XXL, TN-2530, TN-2530XL, and TN-2530XXL cartridge caps. If your cap is damaged during refilling, you will be able to use this cap instead of sealing the cartridge with tape. We recommend keeping a replacement cap just in case!