Pentair | 35505-1428 | Sta-Rite System 3 Large Bulkhead Elbow O-Ring | Replacement Filter Seal

Pentair 35505-1428 is a Sta-Rite System 3 replacement O-ring used in compatible filter bulkhead and elbow assembly service applications. Pentair parts documentation lists this seal in the System 3 filter assembly near the baffle and bulkhead fitting and elbow and bulkhead assembly components, making it a replacement sealing part for maintaining proper fit and serviceability during routine maintenance.

Key Features

• This O-ring is designed for compatible Pentair Sta-Rite System 3 filter applications that require the exact 35505-1428 replacement part number.

• Pentair lists this seal in System 3 Modular Media filter parts documentation as a dedicated replacement O-ring within the bulkhead and elbow assembly area.

• Retail fitment references commonly identify this part as the large bulkhead and elbow O-ring for Sta-Rite System 3 filter service.

• This replacement part is suitable for maintenance work when the original O-ring becomes worn, flattened, brittle, or damaged.

• Proper O-ring condition helps maintain the intended seal between connected filter components during normal operation and service.

• This seal is associated with Sta-Rite System 3 filter models including S7M120, S7M400, S8M150, and S8M500 in replacement-parts references.

• Common replacement-part listings describe this O-ring at approximately 2.25 inches by .25 inch for service identification.

• Pentair SKU 35505-1428 should be matched by exact part number for proper compatibility and replacement selection.

Product Overview

The Pentair 35505-1428 Sta-Rite System 3 large bulkhead elbow O-ring is a replacement sealing component used in compatible System 3 filter assemblies. Pentair’s official System 3 parts documentation lists this SKU directly in the same section as the baffle and bulkhead fitting and elbow and bulkhead assembly, which supports its use as a bulkhead and elbow area seal within the filter system.

This replacement O-ring is intended for repair and maintenance when the original seal no longer provides dependable sealing performance at the designated connection point. Third-party replacement-parts references consistently associate this SKU with Sta-Rite System 3 large bulkhead and elbow service applications and commonly list compatible models such as S7M120, S7M400, S8M150, and S8M500. Using the correct replacement part helps preserve proper fit, supports dependable filter reassembly, and maintains serviceability of the existing System 3 assembly without replacing larger filter components.