---
title: "O2 Icon | Free Download PNG & SVG | Rounded Line - Streamline Material"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/o2--32931
canonical_url: "https://www.streamlinehq.com/icons/download/o2--32931"
summary: "Rounded line icon of a large O with a smaller 2 positioned at its lower right. Used for oxygen, chemistry, and science labels."
---

# O2 icon

The O2 icon shows a large O with a smaller 2 positioned at its lower right. Drawn in the rounded line style on a 24px grid so its forms stay clear at small sizes. Use it for oxygen symbols, chemistry interfaces, science education, laboratory tools, and molecular data. It belongs to Rounded Line - Streamline Material set in the Streamline Material family.

## Preview

![Rounded line icon of a large O with a smaller 2 positioned at its lower right. Used for oxygen, chemistry, and science labels.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/social/o2-e8f65.png?_a=DATAiZkSZAA0)

## Details

- **Name**: O2
- **Type**: Icon
- **Set**: [Rounded Line - Streamline Material](/icons/material-pro-rounded-line.md) — Material Pro Rounded Line variant features rounded corner styles in line format, following Google's Material Design with enhanced coverage and consistency.
- **Family**: [Streamline Material](/icons/material-pro.md)
- **Style**: Line, Outlined, Geometric
- **Category**: Social › Social
- **Default size**: 24px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: o2, oxygen, dioxygen, molecule, gas, chemical, element, lettero, formula, subscript

## Download

- [Download O2 on Streamline](https://www.streamlinehq.com/icons/download/o2--32931)

## Also available in other styles

- [O2 — Outlined Line - Streamline Material](/icons/download/o2--32261.md) (Pro)
- [O2 — Sharp Line - Streamline Material](/icons/download/o2--32890.md) (Pro)

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