---
product_id: 786329394
title: "Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)"
brand: "captain o-ring"
price: "€ 48.26"
currency: EUR
in_stock: true
reviews_count: 5
category: "Captain O Ring"
url: https://www.desertcart.hr/products/786329394-captain-o-ring-replacement-151122-o-rings-compatible-with-pentair
store_origin: HR
region: Croatia
---

# Precise 5.5" ID x 5.83" OD 3-pack OEM fit replacements Durable Buna-N rubber Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)

**Brand:** captain o-ring
**Price:** € 48.26
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal your water system like a pro—don’t let leaks hold you back!

## Quick Answers

- **What is this?** Captain O-Ring - 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?** € 48.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/786329394-captain-o-ring-replacement-151122-o-rings-compatible-with-pentair)

## 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

- • **Perfect OEM Fit:** Seamlessly replaces Pentek 151122 & compatible models for leak-proof sealing
- • **Triple Pack Value:** Three high-quality O-rings in one resealable pack—never run dry on essential seals
- • **Premium Buna-N Material:** Engineered for abrasion resistance and long-lasting flexibility under pressure
- • **Versatile Compatibility:** Fits Big Blue filter housings & multiple brands—Ace, Culligan, Ametek, and more
- • **Trusted Quality & Warranty:** Backed by Captain O-Ring’s decades of expertise and 1-year defect warranty

## Overview

Captain O-Ring’s 3-pack replacement 151122 O-rings are precision-engineered Buna-N seals designed to fit Pentair Pentek Big Blue water filter housings and compatible models. With exact OEM dimensions (5.5" ID x 5.83" OD x 0.165" thickness), these durable gaskets ensure reliable, leak-free performance across residential and industrial water filtration systems. Packaged with quality assurance and a 1-year warranty, they’re the go-to choice for professionals and homeowners aiming to maintain pristine water purity without downtime.

## Description

This Pentek 151122 OR-100 O-ring is used to seal water filter housings. It has an inside diameter of 5-1/2" and outside diameter of just over 5-3/4 inches and is made of nitrile butadiene rubber (Buna-N) for flexibility and resistance to abrasion and tearing. The o-ring fits Pentek Big Blue filter housings, which are used in various applications, such as drinking water purification, swimming pools, industrial processes, and more. Compatible with the following filter housing models: Pentek #10 and #20 Big Blue opaque filter housings with 1" or 1-1/2" inlet/outlet connections Aqua-Flo H-PR-10BV-1 APEC HBB-20/HBB-10 series (input sizes: 3/4", 1", 1.5"), HBC-20/HBC-10 series (input sizes: 3/4", 1", 1.5") Ace Hardware 49561 Ametek Kleen-Plus HD-10-R50, BBS American Plumber W10-PR, 152014, W2010-PR, 152015, W15-PR, 152016, W2015-PR, 152017, WWHC, 152022 Culligan HD-950, HD-950A Pentek 150237, 150239, 150469, BBFS-22, BBFS-222 The 151122 o-ring is a direct replacement for the following other part numbers: Ace Hardware 4001756 APEC O-RING-HB American Plumber 152032, W10-OR Ametek Kleen-Plus 151122-03 Culligan OR-100, 151122-27, 01019189 Home Master #Oring122 Pentek 151122, BB BUNA-N What to expect: This item includes three (3) O-Rings in a resealable zip-top poly bag with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC. Note: If your "Big Blue" filter's o-ring is 5.5" in inside diameter, but thicker than 0.165" (closer to 0.210"), then you most likely need the Culligan OR-250 o-ring (found here: desertcart.com/dp/B074THDBQ2).

Review: Perfect fit for Big Blue filter
Review: Good replacement.

## Features

- Part: Pentek Water 151122 O-Ring (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
- 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
- Manufactured and Warrantied by Captain O-Ring LLC, with decades of experience in the sealing and chemical industry.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B019Y85PR6 |
| Brand | Captain O-Ring |
| Colour | Black |
| Customer Reviews | 4.5 out of 5 stars 3,057 Reviews |
| Item Diameter | 5.83 Inches |
| Item Weight | 18 g |
| Item diameter | 5.83 Inches |
| Manufacturer | Captain O-Ring LLC |
| Material | Buna-N Rubber (NSF61 Certified) |
| Nominal Inside Diameter | 5.5 Inches |
| Nominal Outside Diameter | 5.83 Inches |
| Nominal inside diameter | 5.5 Inches |
| Nominal outside diameter | 5.83 Inches |
| UPC | 722589526046 |
| Unit Count | 3.0 Count |

## Product Details

- **Brand:** Captain O-Ring
- **Colour:** Black
- **Item diameter:** 5.83 Inches
- **Material:** Buna-N Rubber (NSF61 Certified)
- **Nominal inside diameter:** 5.5 Inches

## Images

![Captain O-Ring - 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)
![Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Image 2](https://m.media-amazon.com/images/I/71R81PJXyaL.jpg)
![Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Image 3](https://m.media-amazon.com/images/I/81NAd6c3y8L.jpg)
![Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Image 4](https://m.media-amazon.com/images/I/712FUqHv7zL.jpg)
![Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack) - Image 5](https://m.media-amazon.com/images/I/715qz9cT8mL.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 27 October 2025*



### ⭐⭐⭐⭐⭐ Good replacement.
*by J***H on 13 January 2026*



### ⭐⭐⭐⭐⭐ De materiales de excelente calidad
*by E***Z on 25 July 2024*

Muy buen producto, hecho con buenos materiales y también buenos terminados

## 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 Croatia*
*Store origin: HR*
*Last updated: 2026-03-21*