This comprehensive master O ring kit delivers a complete assortment designed for professional automotive air conditioning and refrigeration service. The kit contains 670 O rings covering 67 part numbers to match a wide variety of fittings, pressure switches, hoses, compressors and service ports. Engineered from durable elastomer compounds, the sealing elements offer reliable resistance to refrigerants and system lubricants so you can make lasting repairs during routine maintenance or emergency leak repair. The selection includes the most commonly used diameters in both metric and imperial sizes and is presented in a compartmentalized, labelled storage case for fast identification and inventory control.

Ideal for workshops, dealerships and mobile technicians, the kit reduces downtime by keeping the right seal on hand for almost any A/C application. Its organized layout and clear part grouping speed up service procedures and help maintain OEM style sealing practices. This kit is particularly useful when servicing A/C pressure switches and associated fittings where correct O ring size and material compatibility are critical to system integrity. Backed by practical usability, the kit supports efficient on vehicle replacement and preventative maintenance programs.

• Contents 670 O rings covering 67 distinct part numbers
• Covers common metric and imperial sizes for A/C fittings and switches
• Made from high quality elastomer compounds compatible with automotive refrigerants and oils
• Compartmentalized labelled storage case for quick selection and inventory
• Designed for use on compressors, condensers, evaporators, hoses and pressure switches
• Reduces downtime and simplifies onsite repairs and maintenance