The Trelleborg Sealing Solutions O-Ring App calculates O-Ring dimensions by simply entering installation specifications for your application in metric or inch. In addition, the App recommends O-Ring sizes according to ISO 3601, so you know exactly which part you need.

Features at a Glance:
- O-Ring Housing: After entering the bore or rod/shaft diameter, you will receive an O-Ring recommendation and O-Ring housing calculation according to the recommendations of ISO 3601
- O-Ring Quick Search: offers the selection of O-Ring nominal sizes according to the following national/international standards: ISO 3601, JIS B 2401 (Japan) SMS 1586 (Sweden)
- Tolerances: calculation of O-Ring tolerances according to ISO 3601-1 Class B
- switch between metric and inch
- chemical compatibility check: find out which materials are compatible with the media used in your application.
- integration of Trelleborg Sealing Solutions Videos

What’s New

Version 4.0

New User Interface, Support for Japanese language and Bug fixes.

Ratings and Reviews

3.0 out of 5
2 Ratings

2 Ratings

Clinical ,

Great Tool For Engineers

As a mechanical engineer, I find this app very useful. I use it at least once a week. The layout of the app is very easy to work with and intuitive. A must have app for all engineers and for anyone who works with o-rings. Thanks Trelleborg for spending the time on this app.

lukemundy ,

Quick reference.

This is a great tool for quickly calculating o-ring sizes. I've mostly used the "quick search" to determine standard sizes.

Houston Aggie ,

Mech Engineer

A great tool to keep you from having to look through pages and pages of catalogs.


Trelleborg Sealing Solutions Germany GmbH
17.6 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, German, Japanese, Simplified Chinese

Age Rating
Rated 12+ for the following:
Infrequent/Mild Mature/Suggestive Themes
Infrequent/Mild Medical/Treatment Information
© Trelleborg Sealing Solutions Germany GmbH


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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