AST SP 5 Spare Parts KitAST SP 5 Spare Parts Kit for Routine Maintenance & Repairs The AST SP 5 Spare Parts Kit provides all essential replacement components needed to maintain your SP 5 dispensing system for joint filling and concrete restoration. Each component is OEM quality, ensuring reliable operation, reduced downtime, and long service life AST SP 5 Spare Parts Kit Contents (1) 5 Gal. Smart Pump Wiper Seal, 1 4" Thick, 22560 02 (1) 5 Gal. Smart Pump Wiper Seal, 3 8"