Pentair
Pentair Small Bulkhead & Elbow O-Ring 35505-1429Z – for Sta-Rite System 3 Filters
Pentair Small Bulkhead & Elbow O-Ring
Replacement sealing O-ring for small bulkhead and elbow connections on compatible Sta-Rite System 3 Modular Media cartridge filters, including S7M120, S7M400, S8M150 and S8M500.
Warranty Information
1-Year Manufacturer Warranty
Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.
The Pentair Small Bulkhead & Elbow O-Ring (35505-1429Z) is a replacement sealing gasket designed for compatible Sta-Rite System 3 Modular Media SM Series pool and spa filters. Also identified under alternate part numbers 35505-1429 and 355051429Z, this O-ring is used at specified small bulkhead and elbow connections on Sta-Rite System 3 filtration equipment.
O-rings are circular mechanical gaskets that create a seal between mating surfaces, helping prevent water from escaping through equipment connections. Replacing a worn, compressed, cracked or damaged O-ring helps restore the sealing function of the affected connection and is an important part of maintaining compatible Sta-Rite System 3 filtration systems.
Key Features
Designed for the specified small bulkhead connection on compatible Sta-Rite System 3 filters.
Provides a sealing barrier between mating surfaces at compatible filter elbow connections.
Blocks potential water escape paths at the connection when correctly installed.
Fits specified Sta-Rite System 3 Modular Media filter models S7M120, S7M400, S8M150 and S8M500.
Identified with dimensions of 2" x 0.12" for the listed replacement application.
Suitable for replacing an existing small bulkhead or elbow O-ring that is worn, damaged or no longer sealing correctly.
Compatibility & Fitment
Compatible with the following Sta-Rite System 3 filter models:
- Sta-Rite System 3 Modular Media SM Series Cartridge Filters: S7M120, S7M400, S8M150, S8M500
Fitment Note: This is the small bulkhead and elbow O-ring. Confirm that your existing filter connection requires part number 35505-1429, 35505-1429Z or 355051429Z, as different sealing locations may use different O-rings. This part should not be confused with the large bulkhead and elbow O-ring, part number 35505-1429Z.
Compatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.
Applications
- Replacement of worn or damaged small bulkhead O-rings
- Sealing compatible Sta-Rite System 3 filter elbow connections
- Addressing water leakage at compatible small bulkhead connections
- Sta-Rite System 3 Modular Media cartridge filter servicing
- Routine filter seal inspection and replacement
Inspect the existing O-ring and connection surfaces during servicing. Confirm the required O-ring size, sealing location and part number before ordering. Shut down the filtration system and relieve internal pressure before opening or servicing the filter.
Specifications
| SKU | 35505-1429Z |
| Alternate SKUs | 35505-1429, 355051429Z |
| Brand | Pentair / Sta-Rite |
| Product Type | Small Bulkhead & Elbow O-Ring |
| O-Ring Size | 2" x 0.12" |
| Application | Small bulkhead and elbow connection sealing |
| Compatibility | Sta-Rite System 3 Modular Media SM Series cartridge filters S7M120, S7M400, S8M150 and S8M500 |
| Warranty | 1-Year Manufacturer Warranty |
| Final Sale | Yes |
Frequently Asked Questions
It is a replacement O-ring designed to seal specified small bulkhead and elbow connections on compatible Sta-Rite System 3 Modular Media filters.
The listed compatible models are S7M120, S7M400, S8M150 and S8M500.
Part number 35505-1429Z is identified as the small bulkhead and elbow O-ring, while 35505-1428Z is the large bulkhead and elbow O-ring. Verify which sealing location and part number your filter requires before ordering.
Replacement may be necessary if the existing O-ring is cracked, worn, compressed, damaged or no longer sealing correctly. Always shut down the filtration system and relieve internal pressure before opening or servicing the filter.
The Pentair 35505-1429Z includes a 1-year manufacturer warranty and is a final sale replacement part. Verify your exact filter model and O-ring part number before ordering.
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