---
product_id: 23942697
title: "Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)"
brand: "captain o-ring"
price: "฿1413"
currency: THB
in_stock: true
reviews_count: 13
category: "Captain O Ring"
url: https://www.desertcart.co.th/products/23942697-replacement-151122-o-rings-compatible-with-pentair-pentek-big-blue
store_origin: TH
region: Thailand
---

# NSF 61 certified Buna-N rubber 3-pack precision fit Proudly USA assembled Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)

**Brand:** captain o-ring
**Price:** ฿1413
**Availability:** ✅ In Stock

## Summary

> 💧 Seal in purity, seal out leaks — upgrade your water filter game today!

## Quick Answers

- **What is this?** Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) by captain o-ring
- **How much does it cost?** ฿1413 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/23942697-replacement-151122-o-rings-compatible-with-pentair-pentek-big-blue)

## Best For

- captain o-ring enthusiasts

## Why This Product

- Trusted captain o-ring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Assembled domestically with quality assurance and backed by Captain O-Ring LLC warranty.
- • **Perfect OEM Fit:** Engineered to match Pentair Pentek Big Blue housings exactly for leak-free sealing on the first try.
- • **Wide Compatibility:** Direct replacement for multiple OEM part numbers across top brands, simplifying your maintenance needs.
- • **Triple Pack Convenience:** Three replacement o-rings included to keep your filtration system running smoothly without downtime.
- • **Premium NSF 61 Certified Material:** Crafted from durable Buna-N rubber ensuring safe, clean drinking water and long-lasting performance.

## Overview

Captain O-Ring’s 3-pack replacement 151122 o-rings are precision-engineered Buna-N seals compatible with Pentair Pentek Big Blue water filter housings. NSF 61 certified for safe drinking water, these OEM-sized gaskets ensure a perfect, leak-free fit on the first try. Proudly assembled in the USA, they offer reliable durability and broad compatibility with multiple major brand part numbers, making them the go-to choice for professional-grade water filtration maintenance.

## Description

desertcart.com: Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) : Tools & Home Improvement

Review: Perfect fit for Big Blue filter - These o-rings fit the Pentair Big Blue filter much better than other brands I have bought. Other brands had a diameter slightly too big for the o-ring channel in the filter sump, making it difficult to seat them in the channel, which required multiple attempts to reattach the sump to the top of the filter to get the assembly leaktight. These o-rings were just right. They seated totally within and against the outside wall of the filter sump o-ring channel, so when the sump was reattached to the top the filter it was leaktight on the first try.
Review: Great fit, finish, and function - No issues.

## Features

- Replacement 151122 o-rings compatible with Pentair/Pentek style Big Blue Water Filter Housings (3 Pack)
- Includes 3 replacement o-rings (also called seals or gaskets) to repair your leaking water filter housing [OEM UPC: 051678511220 , 885343762095]
- 151122 OEM Size o-rings are approximately 5.5" Inside Diameter x 5.83" Outside Diameter x 0.165" Thickness. Please confirm that you need this size o-ring and that your filter housing is listed on the list of compatible housings or that your product manual calls for the 151122 o-ring part number or one of the other part numbers listed below.
- Direct Replacement for the following part numbers (see description below for full water filter compatibility list): Ace Hardware 4001756; American Plumber 152032, W10-OR; APEC O-RING-HB; Ametek Kleen-Plus 151122-03; Culligan OR-100, 151122-27, 01019189; HomeMaster #Oring122; Pentek 151122, BB BUNA-N
- Molded from NSF 61 certified buna-n rubber for safe and clean drinking water. Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B019Y85PR6 |
| Best Sellers Rank | #5,078 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Undersink Water Filtration Replacement Parts |
| Brand | Captain O-Ring |
| Color | black |
| Date First Available | December 29, 2015 |
| EU Spare Part Availability Duration | 1 Years |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 5.83 Inches |
| Item Weight | 0.64 ounces |
| Item model number | 151122x3 |
| Manufacturer | Captain O-Ring LLC |
| Material | Buna-N Rubber (NSF61 Certified) |
| Nominal Inside Diameter | 5.5 Inches |
| Nominal Outside Diameter | 5.83 Inches |
| Number of Pieces | 3 |
| Set Name | 3 Pack |
| UPC | 722589526046 |
| Unit Count | 3 Count |

## Product Details

- **Brand:** Captain O-Ring
- **Color:** black
- **Item Diameter:** 5.83 Inches
- **Material:** Buna-N Rubber (NSF61 Certified)
- **Nominal Inside Diameter:** 5.5 Inches

## Images

![Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Image 1](https://m.media-amazon.com/images/I/61crbTY-o3L.jpg)

## Questions & Answers

**Q: can this ring be streching?**
A: Do you mean can it be stretched?  Essentially, no.  A little bit, but O-rings are not elastic like rubber bands.

**Q: Anyone tried these on us water systems magna (grey housing) filters?**
A: It's plumbing.  There's no way to know whether a gasket or part will fit without buying it and trying it.

**Q: is this the o ring for an Aqua Flow 26258?**
A: The filter housing for this ring is for a 20" Big Blue filter which was installed by Culligan......my guess is the diameter is a standard size for any 20" housing.....but best to confirm with Aqua Flow

**Q: Will these fit the eco pure epw4 filter**
A: i dont believe so

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect fit for Big Blue filter
*by C***S on October 27, 2025*

These o-rings fit the Pentair Big Blue filter much better than other brands I have bought. Other brands had a diameter slightly too big for the o-ring channel in the filter sump, making it difficult to seat them in the channel, which required multiple attempts to reattach the sump to the top of the filter to get the assembly leaktight. These o-rings were just right. They seated totally within and against the outside wall of the filter sump o-ring channel, so when the sump was reattached to the top the filter it was leaktight on the first try.

### ⭐⭐⭐⭐⭐ Great fit, finish, and function
*by J***E on December 29, 2025*

No issues.

### ⭐⭐⭐⭐⭐ Perfect fit
*by R***N on December 24, 2025*

We have purchased this before and it’s an exact fit

## Frequently Bought Together

- Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-26*