# Fitting O-Ring Finder — Find the correct O-Ring.

> Hydraulic fitting O-ring size identification tool. (iPhone/iPad app by Anson Thurston.)

- Source: https://appshunter.io/ios/app/fitting-o-ring-finder/id1557789899 (this page in markdown: same URL + `.md`)
- Developer: [Anson Thurston](https://appshunter.io/developer/1557789901)
- Category: Productivity, Reference
- Price: Free (on sale, was $1.99)
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 181 MB
- Languages: English
- Released: 2023-01-25
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fitting-o-ring-finder/id1557789899/reviews.md

## What is Fitting O?

Use this app to find the correct O-ring for one of the many listed Hydraulic Fitting types. Select the fitting style, and the app will give you details on that style along with a list of the various common sizes and the standard O-ring that fits that size. Select a size from that list for more information about that O-Ring to help you locate it. 

Fittings covered are:
• Flange,  both Code 61 & 62
• O-Ring Face fitting
• O-Ring Boss Port
• BSPP, British Standard Parallel Port
• ISO 6149 Metric Port
• ISO 9974 Metric Port
• DIN 2353 tube fittings
• JIS, Japanese Industrial Standard Port (BSPP)

Sizes use either the US industry standard Dash size or metric.
US dash is based on 1/16" and parts are called out as: -2, -4, -6. Where -2 is 2/16" or 1/8" and -8 is 8/16" or 1/2"  and so forth.

Whenever possible the SAE AS568 standard O-Ring size is used. If not available then the conventional metric ID x Cross based on the fitting size is used. For the JIS Port JIS B2401 sizes are specified.

## Key features

- Hydraulic fitting type selection
- Common O-ring size listing
- Detailed O-ring information
- Supports US Dash and Metric sizes
- Covers Flange, O-Ring Face, and more

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/fitting-o-ring-finder/id1557789899/reviews.md

### 5/5 — Specialized app for a specific need

*2025-05-18*

If you need a new o-ring for a fitting then you know you have to have a specific one in a specific size, but what exactly do you need? This app will guide you easily through the lookup process.

## Frequently asked questions about Fitting O

### What hydraulic fittings does Fitting O-Ring Finder support?

Fitting O-Ring Finder supports a variety of fittings including Flange (Code 61 & 62), O-Ring Face, O-Ring Boss Port, BSPP, ISO 6149 Metric Port, ISO 9974 Metric Port, DIN 2353 tube fittings, and JIS ports.

### How does Fitting O-Ring Finder handle different size standards?

The app uses either the US industry standard Dash size (based on 1/16") or metric measurements. It prioritizes SAE AS568 standard O-Ring sizes when available, otherwise using conventional metric ID x Cross or JIS B2401 sizes for JIS Ports.

### Is Fitting O-Ring Finder available on Android?

Based on the provided data, Fitting O-Ring Finder is available on iPhone and iPad. Information regarding Android compatibility is not specified.

### How often is Fitting O-Ring Finder updated?

Fitting O-Ring Finder was last updated on January 26, 2023, with version 1.0. Further update frequency details are not provided.

### What is the age rating for Fitting O-Ring Finder?

Fitting O-Ring Finder has an age rating of 4+, making it suitable for a wide range of users.

### Does Fitting O-Ring Finder have ads?

No, Fitting O-Ring Finder does not contain advertisements.

### What do users like about Fitting O-Ring Finder?

With a rating of 5.0 stars from 1 rating, users likely appreciate the app's straightforward functionality and accuracy in identifying O-ring sizes for various fittings.

### Can Fitting O-Ring Finder be used offline?

The provided description does not specify whether Fitting O-Ring Finder requires an internet connection to function. However, its utility suggests it may operate offline for core identification tasks.

## Version history (last 1 release)

### 1.0 — 2023-01-26

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*