Pentair O-Ring | System 3 Filters & IntelliPro Pumps | U9-362Z
- In stock, ready to ship
- SKU:
- U9-362Z
-
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About This Item
The Pentair U9-362Z is the OEM replacement O-ring for Sta-Rite System 3 SD Series D.E. Filters, System 3 Modular Media Filters, and IntelliPro variable speed pumps. Sold individually — confirm quantity required for your specific equipment before ordering.
⚠️ IMPORTANT: QUANTITY REQUIRED VARIES BY EQUIPMENT
IntelliPro VSF, IntelliPro 2 VST, and IntelliPro VS pumps require 2 of this O-ring per unit for full service. System 3 filters require 1. This listing is sold as a single O-ring — order the correct quantity for your equipment.
⚠️ IMPORTANT: LUBRICATION REQUIRED — SOLD SEPARATELY
Always lubricate this O-ring with a silicone-based lubricant before installation. We carry the Pentair R172351 Lifeguard® Silicone Lubricant — the OEM-matched product for Pentair equipment.
This O-ring seals the union connection on compatible System 3 filters and IntelliPro pumps. A compromised union O-ring allows water to weep at the union joint — typically the first visible sign that replacement is due. Matching the part number on your existing O-ring before ordering is the most reliable way to confirm correct fit, as union configurations vary across System 3 filter sizes.
Specifications
| Pentair Part Number | U9-362Z |
| Part Name | O-Ring |
| Quantity Included | 1 (Each) |
| Also Included In | PKG188Z and PKG189 union kits |
Fits Into
| Brand | Equipment Line | Model / Part Number | Notes |
| Pentair (formerly Sta-Rite) | System 3 D.E. Filter — SD Series | S7D75 | Qty. 1 per unit |
| Pentair (formerly Sta-Rite) | System 3 D.E. Filter — SD Series | S8D110 | Qty. 1 per unit |
| Pentair | IntelliPro VSF Pump — IntelliPro Series | INTELLIPRO VSF | Qty. 2 per unit |
| Pentair | IntelliPro 2 VST Pump — IntelliPro Series | INTELLIPRO 2 VST | Qty. 2 per unit |
| Pentair | IntelliPro VS Pump (After 2018) — IntelliPro Series | INTELLIPRO VS | Qty. 2 per unit — After 2018 models only |
| Pentair (formerly Sta-Rite) | System 3 Modular Media Filter — System 3 | S7M120 | Qty. 1 per unit |
| Pentair (formerly Sta-Rite) | System 3 Modular Media Filter — System 3 | S7M400 | Qty. 1 per unit |
| Pentair (formerly Sta-Rite) | System 3 Modular Media Filter — System 3 | S8M150 | Qty. 1 per unit |
| Pentair (formerly Sta-Rite) | System 3 Modular Media Filter — System 3 | S8M500 | Qty. 1 per unit |
Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.
Pro Tip
If you're servicing an IntelliPro pump, pull two U9-362Z O-rings — both union connections should be replaced together at the same service interval. Before installing either one, apply a thin coat of Pentair R172351 Lifeguard® Silicone Lubricant to help seat the O-ring evenly and prevent tearing during assembly.
