can this ring be streching?

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

Anyone tried these on us water systems magna (grey housing) filters?

It's plumbing. There's no way to know whether a gasket or part will fit without buying it and trying it.

is this the o ring for an Aqua Flow 26258?

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

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Captain O-Ring - Replacement 151122 O-Rings Compatible with Pentair Pentek Big Blue Water Filters OEM Size ORing Buna-N (3 Pack)

Product ID: 254624639

Details

Brand
Captain O-Ring
Color
black
Item Diameter
5.83 Inches
Material
Buna-N Rubber
Nominal Inside Diameter
5.5 Inches

💧NSF 61 certified safe seal

🛠️Precision OEM size fit

🇺🇸Proudly USA assembled

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

₩64752

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

Description

💧 Seal the deal with Captain O-Ring – your water filter’s best defense!

EASY LEAK REPAIR - Quickly replace worn seals and avoid costly water damage with a simple, precise fit.
TRIPLE PACK VALUE - Three durable o-rings included to keep your water filter running smoothly without interruption.
PREMIUM BUNA N MATERIAL - Crafted from NSF 61 certified synthetic rubber ensuring safe, clean drinking water.
PERFECT OEM COMPATIBILITY - Fits Pentair Pentek Big Blue housings flawlessly for leak-proof performance.
TRUSTED QUALITY ASSURANCE - Manufactured and warrantied by Captain O-Ring LLC, a leader in reliable plumbing parts.

Captain O-Ring’s Replacement 151122 O-Rings (3 Pack) are precision-engineered seals compatible with Pentair Pentek Big Blue water filter housings. Made from NSF 61 certified Buna-N synthetic rubber, these durable o-rings ensure a safe, leak-free water filtration system. Proudly assembled in the USA, they offer a reliable, OEM-sized solution to maintain clean drinking water and prevent costly leaks.

Specifications

ASIN	B019Y85PR6
ASIN	B0G2SR3JWK
Best Sellers Rank	#11,910 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Faucet O-Rings
Brand Name	Captain O-Ring
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (3,102)
Customer reviews	4.5 4.5 out of 5 stars (3,102)
Date First Available	18 November 2025
Item Diameter	5.83 Inches
Item Weight	18 g
Manufacturer	Captain O-Ring
Material Type	Synthetic Rubber
Model	151122x3
Nominal Inside Diameter	5.5 Inches
Nominal Outside Diameter	5.83 Inches
Number of Pieces	3
Part Number	151122
Temperature Range	4E+1 Degrees Fahrenheit
UPC	722589526046
Unit Count	3 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.