EASIER AND QUICKER REPAIR. Seals are a core component of windshield repair injectors. The GlasWeld Zoom injector uses three different seals. Keep your injector running smoothly by replacing your seals. REPLACEMENT. Seals wear over time, which affects how the injector performs. When a seal between the windshield and injector fails, the pressure and vacuum cycle becomes ineffective. Replacement seals ensure the repair equipment performs to standards. KIT INCLUSION. Each assortment pack contains all the seals you need for your Zoom equipment to perform optimally. The kit includes (2) Upper Seals, (2) Lower Seals, (6) Outer White Seals, and (2) Cap O-rings. When one seal is cracked or damaged, look for a suitable replacement in the assortment kit. FOR BEST RESULTS: The GlasWeld Zoom Injector Seals are explicitly designed for GlasWeld's Zoom Professional Windshield Repair Injector. Avoid using a seal from another brand to ensure better performance of your windshield repair injector. OUR PROMISE: The ProVac Zoom is an advanced yet straightforward windshield repair injector widely recognized as the industry's strongest vacuum. The seals we provide are designed to be compatible with Zoom to help you achieve the best results.