💧 Washer, Pentair Sta-Rite, 5/16″
Made by Pentair, manufacturer part number U43-41SSZ. It is listed for the equipment shown below, so check the model on your own unit against that list. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Pentair |
| Manufacturer part number | U43-41SSZ |
| Catalog description | Washer, Pentair Sta-Rite, 5/16″ |
✅ Listed for
- Pentair Sta-Rite JW/JW Above-Ground/JWPA Series Pump
- StaRite Max-E-Glas II / Dura-Glas II Pumps
- StaRite 6″ Trap Kit Pkg 161 for Dura-Glas/Max-E-Glas Pumps
- StaRite 5″ Trap Kit Pkg 115 for Dura-Glas/Max-E-Glas Pumps
- StaRite Max-E-Glas/Dura-Glas Pumps
- Pentair IntelliPro VS (Before 2019)
- Pentair Sta-Rite Max-E-Pro Series
🔄 Cross-reference part numbers
These part numbers are listed as alternatives for this part.
| Brand | Part number |
|---|---|
| StaRite/Pentair | U43-41SS |
Exploded parts diagrams: This part is shown as item #11 on the Pentair MasterTemp Gas Heater Water System; the StaRite Max-E-Therm SR-200, 333, 400 Water System exploded parts diagrams.
🔧 Pentair MasterTemp Gas Heater Water System – exploded parts diagram

The numbered parts below make up this assembly. Parts we stock are linked – click any to view.
| No. | Part |
|---|---|
| – | _U11-197P |
| – | 46-102-1000 |
| – | 46-102-1002 |
| – | Heat Exchanger Kit, Pentair MasterTemp HD 250 ASME |
| – | 46-102-1005 |
| – | 46-102-1020 |
| – | 46-102-1025 |
| – | 46-102-1030 |
| – | 46-102-1035 |
| – | 46-102-1040 |
| – | 46-102-1045 |
| – | 46-102-1050 |
| – | 46-102-1055 |
| – | 46-102-1060 |
| – | 46-102-1100 |
| – | 46-102-1105 |
| – | 46-102-1110 |
| – | 46-102-1115 |
| – | 46-102-1120 |
| – | 46-102-1125 |
| – | 46-102-1130 |
| – | 46-102-1150 |
| – | Gas Heater, LP, Pentair MasterTemp, 250K BTU, E-Commerce |
| – | Gas Heater, NG, Pentair MasterTemp, 400 BTU, E-Commerce |
| – | Kit Thermal Regulator |
| – | _460923 |
| 23 | 46-110-W025K23 |
| 22 | Pressure Relief Valve, Pentair Max-E-Therm, ASME |
| 21 | Plug, Pentair MasterTemp/Max-E-Therm, 3/4" mpt, Zinc |
| 20 | Drain Plug, Pentair Sta-Rite, 1/4"mpt, with O-Ring |
| 18 | O-Ring, 1-5/8" ID, 3/16" Cross Section, Generic |
| 16 | Thermal Regulator, Pentair MasterTemp |
| 15 | Thermal Regulator Kit, Pentair MasterTemp/Max-E-Therm |
| 14 | Connecter Tube, Pentair MasterTemp/Max-E-Therm, w/O-Ring |
| 13 | O-Ring, 2" ID, 1/8" Cross Section, Generic |
| 12 | Hardware Kit, Pentair MasterTemp, 5/16-18 x 3-1/4" |
| 11 | Washer, Pentair Sta-Rite, 5/16" ◀ this part |
| 9 | 46-110-W025K9 |
| 8 | Manifold Bypass Valve Kit, Pentair MasterTemp/Max-E-Therm |
| 5 | O-Ring, Kit Pentair MasterTemp/Max-E-Therm, Manifold |
| 3 | 46-110-W025K3 |
| 2 | 46-110-W025K2 |
| 1 | 46-110-W025K1 |
🔧 Exploded diagram and parts
This part belongs to the StaRite Max-E-Therm SR-200, 333, 400 Water System assembly. Everything listed below is something we stock for it, and the numbers match the diagram.
Kit Valve Stem Bypass
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Pump Union, 2" Female Buttress Thread x 2" Slip, Quantity 2 | PKG 188Z | 2 in stock | $53.33 | Add to cart |
![]() |
Kit Valve Stem Bypass | 42001-0014Z | 4 in stock | $60.59 | Add to cart |
Complete tools
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
![]() |
Tool, Button-Hook, Drain Plug Wrench, Stainless Steel | DPW-150 | 23 in stock | $78.24 | Add to cart |
![]() |
Tool, Socket for Governor Plug, Raypak/Sta-Rite | HPS-200 | 14 in stock | $60.59 | Add to cart |























