Olypsys Measure: O-Ring Sizing

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Everyone
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About this app

Measure and identify O-rings, gaskets, circlips and washers with your phone.

Put the part flat on an Olypsys calibration grid and take a photo. You get its dimensions in seconds, and the app tells you which catalogue parts fit.

WHAT IT MEASURES
Free: O-rings and backup rings.
Pro: worn and compression-set O-rings, FEP O-rings, X-rings, square rings, V-rings, O-ring cord, gaskets, circlips and washers.
Enterprise: enhanced-accuracy O-ring measurement and remote capture.

STANDARDS MATCHING
Measured parts are compared against catalogue sizes from standards including AS568, BS 4518, GB/T 3452.1, JIS B 2401, DIN 471, DIN 472, DIN 6799, ASME B16.21 and EN 1514-1. You see ranked candidates with a confidence score, part number and manufacturer.

CAD EXPORT (PRO)
Download any traced gasket, circlip or washer as DXF, SVG or .o2d for cutting or quoting.

WHAT PEOPLE USE IT FOR
Goods-inward inspection. Identifying worn or unmarked parts for replacement. Quality checks before assembly. Go/No-go checking against your own tolerances or a standard size.

Measurements save with a project reference, location and application. Free accounts keep three days of history. Pro keeps all of it.

The computer vision corrects for shadows, camera tilt and lens distortion, so results repeat between photos.

You need an Olypsys calibration grid. Print one, or buy a durable mat.

Pro and Enterprise are subscriptions. Enterprise is sold through Olypsys and its distributors: contact sales@olypsys.com.
Measure O-rings, gaskets, circlips and washers from a photo. Get part numbers.
Updated on
Aug 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info and Messages
  • This app may collect these data types
    Location, Personal info and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

The app now follows your device language, and the translations are complete in all nine languages.

Circlip and washer results draw the real shape of the part you measured.

Fixed a grey box that could appear instead of the circlip drawing.

Uploads recover better on a weak connection, and a bug that could sign you out unexpectedly is fixed.
Content rating
Everyone
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App support

About the developer
OLYPSYS TECHNOLOGIES LTD
matthew@olypsys.com
18 Main Street Worlaby BRIGG DN20 0NW United Kingdom
+44 7715 460193