The Nitrile (Buna-N) seal material provides excellent resistance to oils

during compressor replacement

or if the mounting studs have snapped during disassembly

To ensure proper operation and National Board certification

Featuring a 1/2" fixed bore and a 4

Browning 2AK59H Sheave 322838-754 The Nitrile (Buna-N) seal materialThe Browning 2AK59H Sheave is a precision machined two groove cast iron pulley engineered for reliable power transmission in light duty HVAC and industrial blower applications. Designed with a 5. 75" outside diameter, this sheave is compatible with 3L, 4L, and A section belts, providing versatile drive ratios for belt driven fans and air handlers. Constructed from high grade grey cast iron, it offers superior vibration dampening and heat dissipation