Are metric and standard O-rings interchangeable?
There are two main o-ring sizing types: standard and metric. Standard was developed for use in the United States, while the international community uses metric sizes. The metric sizes are further broken down by region, notably Europe and Japan.
How are metric O-rings sizes?
O-Ring size is defined by inside diameter and cross-section (width) and is listed in both fractional and decimal dimensions with tolerances. The standards range in I.D.’s from . 74 mm to 658.88 mm and cross sections (widths) from 1.02 mm to 6.99 mm.
How many mm is size o-ring?
17.53 55.1
To discover your ring size, simply measure the inside diameter of an existing fitting ring and check the measurement against our handy chart below….Ring Size Conversion Chart.
| Inside diameter (mm) | Inside circumference (mm) | Ring size |
|---|---|---|
| 17.12 | 53.8 | N |
| 17.53 | 55.1 | O |
| 17.93 | 56.3 | P |
| 18.34 | 57.6 | Q |
How do I find the right size o-ring?
O-Ring Size The size of an O-ring can be determined by measuring the diameters and the width of the cross-section. The measurement you will need to include are the internal diameter (ID), outside diameter (OD), and the cross-section width (CS).
How many mm is a size o-ring?
Ring Size Conversion Chart
| Inside diameter (mm) | Inside circumference (mm) | Ring size |
|---|---|---|
| 17.53 | 55.1 | O |
| 17.93 | 56.3 | P |
| 18.34 | 57.6 | Q |
| 18.75 | 58.9 | R |
Are o-rings sized by ID or OD?
The best way to size an o-ring is by measuring the CS (cross-section) and ID (inside diameter). For measuring the cross-section, it is best to use a caliper, a.k.a. micrometer.
What mm is size o-ring?
Ring Size Conversion Chart
| Inside diameter (mm) | Inside circumference (mm) | Ring size |
|---|---|---|
| 17.53 | 55.1 | O |
| 17.93 | 56.3 | P |
| 18.34 | 57.6 | Q |
| 18.75 | 58.9 | R |
Are O-rings sized by ID or OD?
How many MM is a size O-ring?
How is an O-ring ID measured?
The ID measures the space between the inner edges of your o-ring. To find this measurement, lay your o-ring on a flat surface. Use a ruler to measure from one inner edge of the o-ring across to the inner edge. Depending on the size of your o-ring, the ID may be recorded in inches or millimeters.
What is ring size P in mm?
Ring Size Conversion Chart
| Inside diameter (mm) | Inside circumference (mm) | Ring size |
|---|---|---|
| 17.12 | 53.8 | N |
| 17.53 | 55.1 | O |
| 17.93 | 56.3 | P |
| 18.34 | 57.6 | Q |
What size ring is 20mm diameter?
Download the Lily Blanche ring sizing pdf
| UK SIZE | US SIZE | DIAMETER (mm) |
|---|---|---|
| S | 9½ | 19.2mm |
| T | 10 | 19.6mm |
| U | 10½ | 20mm |
| V | 11 | 20.4mm |
How many MM is a size o-ring?
Are O rings sized by ID or OD?