---
product_id: 14349699
title: "Four Seasons 26721 O-Ring & Gasket Air Conditioning System Seal Kit"
brand: "four seasons"
price: "€ 26.04"
currency: EUR
in_stock: true
reviews_count: 8
category: "Four Seasons"
url: https://www.desertcart.fi/products/14349699-four-seasons-26721-o-ring-and-gasket-air-conditioning-system
store_origin: FI
region: Finland
---

# R134a-compatible green rubber Complete multi-size kit OE-grade precision fit Four Seasons 26721 O-Ring & Gasket Air Conditioning System Seal Kit

**Brand:** four seasons
**Price:** € 26.04
**Availability:** ✅ In Stock

## Summary

> ❄️ Seal the deal with Four Seasons – your AC’s best-kept secret!

## Quick Answers

- **What is this?** Four Seasons 26721 O-Ring & Gasket Air Conditioning System Seal Kit by four seasons
- **How much does it cost?** € 26.04 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/14349699-four-seasons-26721-o-ring-and-gasket-air-conditioning-system)

## Best For

- four seasons enthusiasts

## Why This Product

- Trusted four seasons brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comprehensive Seal Kit:** Includes a variety of O-rings and gaskets to cover your entire AC system conversion or repair—no last-minute trips needed.
- • **Precision OE-Grade Fit:** Engineered to meet or exceed original equipment standards for flawless installation and leak-proof performance.
- • **R134a-Ready Green O-Rings:** Specifically designed green rubber seals optimized for modern eco-friendly refrigerants, ensuring system longevity.
- • **Trusted by Pros & DIYers Alike:** Highly rated with 4.6 stars from 250+ reviews, making it the go-to choice for reliable AC system maintenance.
- • **Lightweight & Compact Packaging:** Easy to store and handle with a sleek 0.8 x 3 x 6 inch footprint, perfect for professional toolkits or DIY setups.

## Overview

The Four Seasons 26721 O-Ring & Gasket Air Conditioning System Seal Kit offers a vehicle-specific, OE-quality solution for AC system repairs and R12 to R134a conversions. Featuring green rubber O-rings tailored for modern refrigerants and a comprehensive assortment of seals, this lightweight kit ensures a precise, leak-free fit trusted by professionals and DIY enthusiasts alike.

## Description

O-Ring & Gasket Air Conditioning System Seal Kit

Review: Needed for an R12 to R134a Conversion - Why did you pick this product vs others?: I was in need of O-rings for the conversion of my 1993 Ford F150 from R12 to R134a. Apparently, the green O-rings are specific to R134a. For my application there was enough o-rings to select from so that I didn't have to purchase any more. I also have a lot left over. It's a little bit of a challenge to match things up because of the OEM o-rings being mashed down and basically deformed at this point. In the end, everything worked out and I'm up and running.
Review: Excellent product - When it came to do the work had forgotten to get me a set of o rings order and delivered fast . some left over as I did not do a full extensive refit but definately not short if you are doing the whole 9 yards

## Features

- Meets or exceeds OE design and performance
- Part number: 26721
- Fit type: Vehicle Specific
- Package Dimensions: 0.254 H x 15.494 L x 5.588 W (centimeters)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0019ICVEU |
| Best Sellers Rank | #927,175 in Automotive ( See Top 100 in Automotive ) #191 in Automotive Replacement Air Conditioning O-Rings & O-Ring Kits |
| Brand | Four Seasons |
| Color | Green |
| Customer Reviews | 4.6 4.6 out of 5 stars (250) |
| Date First Available | October 10, 2007 |
| Exterior | Machined |
| Global Trade Identification Number | 00096361267213 |
| Item Weight | 0.16 ounces |
| Item model number | 26721 |
| Manufacturer | Four Seasons |
| Manufacturer Part Number | 26721 |
| Material | Green Rubber O-Rings, Metal spring O-Ring |
| Model | FOR26721 |
| Product Dimensions | 0.8 x 3 x 6 inches |
| UPC | 096361267213 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Four Seasons
- **Color:** Green
- **Manufacturer:** Four Seasons
- **Material:** Green Rubber O-Rings, Metal spring O-Ring
- **UPC:** 096361267213

## Images

![Four Seasons 26721 O-Ring & Gasket Air Conditioning System Seal Kit - Image 1](https://m.media-amazon.com/images/I/719mcg+owmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Needed for an R12 to R134a Conversion
*by M***A on July 5, 2025*

Why did you pick this product vs others?: I was in need of O-rings for the conversion of my 1993 Ford F150 from R12 to R134a. Apparently, the green O-rings are specific to R134a. For my application there was enough o-rings to select from so that I didn't have to purchase any more. I also have a lot left over. It's a little bit of a challenge to match things up because of the OEM o-rings being mashed down and basically deformed at this point. In the end, everything worked out and I'm up and running.

### ⭐⭐⭐⭐⭐ Excellent product
*by E***E on February 10, 2024*

When it came to do the work had forgotten to get me a set of o rings order and delivered fast . some left over as I did not do a full extensive refit but definately not short if you are doing the whole 9 yards

### ⭐⭐⭐⭐⭐ BEST fitting O-Rings for my OLD Ford A/C !
*by C***3 on June 26, 2023*

Normal O-Rings from the auto parts store ARE NOT thick enough & don't work. THESE WORK VERY GOOD. GREAT ! ! ! ! !

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**Shop now:** [https://www.desertcart.fi/products/14349699-four-seasons-26721-o-ring-and-gasket-air-conditioning-system](https://www.desertcart.fi/products/14349699-four-seasons-26721-o-ring-and-gasket-air-conditioning-system)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-23*