Sealey 225 Piece Rubber O Ring Assortment

The Sealey 225 Piece Rubber O Ring Assortment is a comprehensive set of HNBR O-rings designed specifically for automotive air conditioning systems and general maintenance applications. Manufactured from high-grade HNBR (Hydrogenated Nitrile Butadiene Rubber), these O-rings offer excellent chemical resistance and durability for demanding professional use. This assortment is engineered for compatibility with modern refrigerants including Freon R134a and R1234YF gas, making it an essential kit for automotive technicians working on air conditioning units. The HNBR construction ensures reliable performance and long-term sealing integrity when exposed to these refrigerants and associated system pressures. The kit provides 225 O-rings across 17 different sizes, ranging from 3mm to 22mm internal diameter with various thicknesses. Each size is carefully selected to cover the most common applications encountered in automotive AC servicing and general workshop repairs. The most frequently used sizes (3mm through 8mm ID) are supplied in quantities of 20 each, while larger sizes are provided in quantities of 5, ensuring you have adequate stock for routine servicing work.