Graco's PolyCarballoy Side Seals offers extended service life compared to standard materials, reducing downtime and maintenance costs. Compatible with various Fusion AP spray gun models, these side seals are a reliable choice for professionals seeking to uphold the efficiency and reliability of their equipment. Whether for routine maintenance or as part of a comprehensive spare parts kit, the 249990 PolyCarballoy Side Seals are a valuable component for professionals in the spray foam and polyurea application industries.