ARO 637401-ST EXP Service Kit, PTFE/Santoprene, 316 SS Balls

The ARO 637401-ST is an EXP service kit for pumps in the ARO PD10 family, covering PD10A, PD10R and PD10S model numbers. Its ball material is listed as 316 stainless steel, and its diaphragms are PTFE/Santoprene. The ST letters in the kit number show up again as the closing letters of every listed pump code, from PD10A-BAP-SST to PD10A-ASS-HST.

Linked components for this kit are the ARO 96145-A and ARO 96146-T diaphragms, plus the PTFE O-rings ARO 93281 and ARO 93282.

When This Kit Makes Sense

• A PD10 pump shows liquid at the exhaust after a diaphragm failure.
• Suction has weakened and the pump takes longer to prime than it used to.
• You keep spares for several PD10 pumps whose model codes end in ST and want one kit for all of them.

Compatible PD10 Pumps

• ARO PD10A-BAP-SST
• ARO PD10A-AAP-FST
• ARO PD10R-ASS-SST
• ARO PD10S-ASS-SST
• ARO PD10A-ASP-SST
• ARO PD10A-AAP-SST
• ARO PD10A-ASS-HST
• ARO PD10A-BSS-SST

A ninth ARO pump is also on the fit list for this kit.