Seal Kit Packing Assembly, 20mm each kit services one piston. You will need to purchase 3 to repair one pump.
Hotsy Part Number: 753014, 8.717-622.0, 87176220
This is the OLD style complete seal kit.
Want to update to the NEW style? Buy part number 87254070. You will need to purchase 3 each of this Complete Packing Kit to update your existing pump. This packing kit will fit pumps: HHC215, HHC235.1, HC240, HC280, HH306.1, H300, HH406.1, H400, HHC456.1, HC450, HHC466.1, HC460, HHC506.1, HC500