An A/C seal kit contains replacement O-rings for every joint in the system. These green rubber O-rings prevent refrigerant leaks at the compressor, condenser, evaporator, and drier connections. Replace all seals whenever you open the system to prevent future leaks.
Mechanic Glossary
A/C Seal Kit O-Rings
A collection of vehicle-specific HNBR rubber O-rings used to seal all hose and component joints in the A/C system.
Frequently Asked Questions
No. Kits contain various sizes to match the specific tube diameters of your vehicle's lines.
HNBR (Hydrogenated Nitrile Butadiene Rubber), which is designed to withstand high heat, PAG oil, and modern refrigerants.
No. Never use RTV or silicone sealant on A/C fittings. It will migrate into the system and clog the expansion valve. Only use clean PAG oil to lubricate them.