
ARO 637140-88 Fluid Section Repair Kit, Polyurethane
EXP Series fluid section kit with a polyurethane diaphragm and balls for 66605J, 666057 and 666053 pumps
ARO 637140-88 is an EXP Series fluid section kit with a polyurethane diaphragm and polyurethane balls, listed for three pumps ending in 88.
ARO lists 637140-88 under its EXP Series as a fluid section service and repair kit. Polyurethane is the material for the diaphragm and also for the check balls, which sets this kit apart from the Viton, nitrile and Santoprene versions of 637140.
One of the pumps it fits, the 666053-388, is a 1/2 in. non-metallic model. Size data for the other two is not listed here. Contents are not itemized either, so look up your pump in its manual for the complete list.
When to Use This Kit
- Abrasion has worn the balls out of round, letting fluid slip back.
- The pump runs but no longer reaches its usual discharge rate.
- Liquid is blowing out with the exhaust air.
Fits These ARO Pumps
Pump models that call for this kit:
Each model code ends in 88 to match the kit suffix. Check your nameplate for the digits in front of it.
| Brand | ARO |
|---|---|
| Product Type | Kit |
| Product Series | EXP Series |
| Material - Diaphragm | Polyurethane |
| Material - Balls | Polyurethane |
