Fits these pumps
Davey: HS50-05/06 · HS60-06/08 · Silensor SLSECO, SLS75/100/150/200/300 · Silensor SLLECO, SLL150/200/300/400 · ProMaster VSD200/VSD400 — replaces 49771SP (the seal inside kit 31618).
What you get
Complete 5/8″ mechanical seal — carbon rotating face, ceramic seat, stainless spring — matched to Davey’s current home-pressure and Silensor pool family.
How you know it’s this part
On an HS pressure pump: a drip from under the pump head with the pressure otherwise normal. On a Silensor: the quietest pump in the class starts leaving a wet shadow on the pad. Both point here. Model not listed? Check with us — Davey made a lot of variants.
Fitting
30–45 minutes. The Silensor case nuts want the proper spanner — don’t chew them with multigrips. Full walkthrough in the install guides, and do the casing o-ring at the same time.
Quality aftermarket part. Not a genuine Davey product; brand and model names are used for compatibility reference only and remain trademarks of their owners.