Product Details: 

• Diaphragm Repair Kit
• Made by UDOR
• Part # 8700.45 
• This Kit is for the Following Pump Model #s: KAPPA 33, KAPPA 43, and KAPPA 53
• The Following Parts are Included: 
• (6) O-Rings (Reference # 1381)
• (3) Piston Diaphragms (Desmopan) (Reference # 8120)

You can see each part included in the kit highlighted in the pump diagram image shown on this page.