ARO 637309-CC Hytrel Diaphragm Pump Repair Kit
Repair kit with a Hytrel diaphragm and Hytrel balls for the ARO PD20A-AAP-CCC-B double diaphragm pump
The ARO 637309-CC repair kit uses Hytrel for both the diaphragm and the check balls. Our data lists it for the PD20A-AAP-CCC-B double diaphragm pump.
ARO 637309-CC is a repair kit for the fluid end of an ARO (Ingersoll Rand) double diaphragm pump. The specs call out Hytrel for the diaphragm and Hytrel for the balls, so one elastomer covers both main wear points. Swap the diaphragm and balls at the same service so the new parts wear in together.
Related items in our records for this kit are the ARO 94329-C diaphragm, the ARO 93358-C Hytrel ball and the ARO Y327-237 O-ring. These are handy if only one piece needs replacing rather than the full set.
When to Use This Kit
- The diaphragm shows cracks or fluid appears at the muffler.
- Suction is weak and the pump struggles to self-prime.
- Balls show flat spots or the output pulses unevenly.
Pump Listed for This Kit
- ARO PD20A-AAP-CCC-B Double Diaphragm Pump
If your pump carries a different model number, read its nameplate and check the service manual for the correct repair kit.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Material - Diaphragm | Hytrel |
| Material - Balls | Hytrel |
