ARO 637427-SA Santoprene Fluid Section Repair Kit, Stainless Balls

The ARO 637427-SA pairs Santoprene diaphragms with stainless steel balls, and ARO's notes call it a fluid section repair kit. It is the SA variant in the 637427 series, matched to PD05P pumps with SA in their model codes, such as PD05P-ASS-SSA. Unlike the 637427-ST, which uses PTFE/Santoprene diaphragms, this kit keeps the diaphragm all Santoprene while sharing the same stainless ball part number. Every pump on its list is a PD05P model.

Related parts on its listing are the ARO 93465 diaphragm, the ARO 93410-1 stainless steel ball and the ARO 93763 O-ring.

Reasons to Reach for the 637427-SA

• A Santoprene diaphragm has torn and fluid is showing at the exhaust.
• The stainless balls are leaking back and cutting delivery.
• A planned PD05P overhaul calls for new diaphragms, balls and O-rings.

Fits These PD05P Pumps

• ARO PD05P-AAS-PSA
• ARO PD05P-ARS-SSA-B
• ARO PD05P-ASS-SSA
• ARO PD05P-ARS-PSA-B
• ARO PD05P-AES-SSA-B
• ARO PD05P-APS-SSA-B

The six models above are the full fit list.