---
product_id: 34919498
title: "AZ-N70202/100"
brand: "mr o-ring"
price: "฿1101"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/34919498-az-n70202-100
store_origin: TH
region: Thailand
---

# Precision 1/4" ID & AS568A aerospace standard Wide temperature range: -30°F to 250°F 70A Durometer hardness for superior durability AZ-N70202/100

**Brand:** mr o-ring
**Price:** ฿1101
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal with precision and power!

## Quick Answers

- **What is this?** AZ-N70202/100 by mr o-ring
- **How much does it cost?** ฿1101 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/34919498-az-n70202-100)

## Best For

- mr o-ring enthusiasts

## Why This Product

- Trusted mr o-ring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Pack Advantage:** 100-pack supply keeps your projects running without interruption or downtime
- • **Thermal Versatility:** Operates flawlessly from freezing -30°F to scorching 250°F, perfect for diverse environments
- • **Engineered for Endurance:** 70A hardness ensures long-lasting resistance against wear and penetration
- • **Industry-Trusted Quality:** Meets rigorous Aerospace Standard AS568A for reliable, professional-grade sealing
- • **Precision Fit Guaranteed:** Exact 1/4" inner diameter and 1/2" outer diameter for seamless sealing performance

## Overview

The Mr O-Ring 202 Buna-N O-Ring is a high-performance sealing solution crafted from durable Buna-N material with a 70A hardness rating. Designed to withstand temperatures from -30°F to 250°F, it offers reliable sealing for fluids and hydrocarbons. With precise dimensions (1/4" ID, 1/2" OD) and compliance with Aerospace Standard AS568A, this pack of 100 O-rings is ideal for professionals demanding consistent quality and bulk availability.

## Description

This O-ring is made of black Buna-nitrile, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Buna-nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. It can be used in temperatures between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C), and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol, acids and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light. This Buna O-ring has a shore durometer of 70A. Shore durometer is the hardness of a material, and its resistance to permanent indentation. A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no indentation. O-rings commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly seen in engines, faucets, flanges, valves, and various cylinders. They are circular in shape, with a round cross section, and a hole in the center, similar to a doughnut. O-rings are available in various sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter. These Buna-nitrile O-rings meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings.

## Features

- Made of Buna-nitrile (also called Buna-N) for use with a variety of fluids and hydrocarbons
- Can be used across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C)
- Round in cross-section to provide a seal between cylindrical overlapping surfaces
- Durometer (hardness) of 70A for resistance to penetration
- Meets standards defined by Aerospace Standard AS568A

## Product Details

- **Material:** Nitrile Rubber
- **Nominal Inside Diameter:** 0.23 Inches
- **Item Diameter:** 0.51 Inches
- **Brand:** Mr O-Ring
- **Color:** Black

## Images

![AZ-N70202/100 - Image 1](https://m.media-amazon.com/images/I/81VuBT35OeL.jpg)
![AZ-N70202/100 - Image 2](https://m.media-amazon.com/images/I/51bid7qjm5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ serve their purpose on router bits
*by R***N on April 27, 2025*

On a suggestion in a book on table routing, I got these to put on the 1/4 inch shanks of router bits to seat them in the collett properly. The 1/4 inch o-rings fit snugly on 1/4 inch shanks and serve their purpose. You're not suppose to bottom out a bit in the collett and this alleviates the need to guess whether you're a 1/8 inch higher.

### ⭐⭐⭐⭐⭐ Fixed Our Snoo Bassinet!
*by G***I on January 16, 2025*

Our Snoo bassinet first began making creaking noises then eventually stopped every bit of motion. In doing some online research, other people experienced the same and discovered that simply swapping the worn out o-rings would fix this. After disassembling the bassinet and replacing the o-ring.. the Snoo was working as good as new. Movement was restored and the motion was quieter than before.

### ⭐⭐⭐⭐⭐ Snoo Motor O-Ring
*by R***D on October 28, 2024*

Worked great for replacing the Snoo motor O-rings. I was able to use 3 instead of 2

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-02*