PENTAIR O-RING 139 X 2.109 - 35505-1428

SKU: 35505-1428
Regular price $4.79

The Pentair O-Ring 139 x 2.109 (35505-1428) delivers the precision sealing performance pool service contractors need for reliable Sta-Rite System 3 SM-Series filter maintenance. This EPDM rubber o-ring ensures watertight integrity in bulkhead and elbow assemblies, preventing costly callbacks and maintaining your professional reputation.

Professional Service Benefits

Designed specifically for the demanding requirements of commercial pool filtration systems, this high-quality EPDM elastomer o-ring resists chemical degradation and temperature extremes. The precise 0.139" thickness and 2.109" diameter specifications ensure perfect fit and long-lasting performance, reducing maintenance frequency and protecting your service margins.

Why Pool Contractors Choose MT Pools

As your trusted B2B partner, MT Pools provides the genuine Pentair replacement parts you need with superior customer service and reliable inventory. Our wholesale pricing structure supports your profitability while our technical expertise helps you complete jobs efficiently and correctly the first time.

Frequently Asked Questions

Which Pentair filter systems use the 35505-1428 o-ring?

The 35505-1428 o-ring is specifically designed for Sta-Rite System 3 SM-Series Modular Media Cartridge Pool and Spa Filters, listed as Key No. 11 in the owner's manual.

What makes EPDM rubber ideal for pool applications?

EPDM rubber offers superior chemical resistance to pool chemicals, UV stability, and temperature tolerance, making it the preferred material for long-lasting pool equipment seals.

How do I ensure proper installation of this o-ring?

Clean the groove thoroughly, apply a thin layer of silicone lubricant, and ensure the o-ring seats properly without twisting or pinching for optimal sealing performance.

Does MT Pools stock bulk quantities for service companies?

Yes, MT Pools maintains inventory for bulk orders and offers competitive B2B pricing for pool service companies and contractors with recurring maintenance needs.

Order Your Replacement Parts Today

Keep your service operations running smoothly with genuine Pentair replacement parts from MT Pools. Our team provides expert technical support and fast shipping to keep your projects on schedule.

• Genuine Pentair part number 35505-1428 for authentic quality
• EPDM rubber construction resists chemicals and temperature extremes
• Precise 0.139" thickness x 2.109" diameter for perfect fit
• Compatible with Sta-Rite System 3 SM-Series Modular Media filters
• Prevents leaks in large bulkhead and elbow assemblies
• Listed as Key No. 11 in Pentair System 3 SM Owner's Manual
• Easy installation for quick service calls
• Chemical resistant elastomer for long service life
• Maintains watertight seal under pressure
• Reduces callback frequency and maintenance costs