---
product_id: 9127996
title: "M1.5x5 Buna-N O-Ring, 70A Durometer, Round, Black, 5 mm ID, 8 mm OD, 1.5 mm Width (Pack of 100)"
brand: "small parts"
price: "9.58 OMR"
currency: OMR
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.om/products/9127996-m1-5x5-buna-n-o-ring-70a-durometer-round-black
store_origin: OM
region: Oman
---

# Pack of 100 70A Durometer -30°F to 250°F M1.5x5 Buna-N O-Ring, 70A Durometer, Round, Black, 5 mm ID, 8 mm OD, 1.5 mm Width (Pack of 100)

**Brand:** small parts
**Price:** 9.58 OMR
**Availability:** ✅ In Stock

## Summary

> 🔒 Seal the Deal with Confidence!

## Quick Answers

- **What is this?** M1.5x5 Buna-N O-Ring, 70A Durometer, Round, Black, 5 mm ID, 8 mm OD, 1.5 mm Width (Pack of 100) by small parts
- **How much does it cost?** 9.58 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/9127996-m1-5x5-buna-n-o-ring-70a-durometer-round-black)

## Best For

- small parts enthusiasts

## Why This Product

- Trusted small parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Value Pack:** Get 100 O-rings to keep your projects running smoothly without frequent reorders.
- • **Durable Hardness:** 70A durometer rating provides exceptional resistance to penetration and wear.
- • **Precision Sealing:** Round cross-section design ensures a reliable seal between cylindrical surfaces.
- • **Versatile Fluid Compatibility:** Crafted from durable Buna-nitrile, perfect for various fluids and hydrocarbons.
- • **Extreme Temperature Resilience:** Engineered to perform in temperatures ranging from -30°F to 250°F.

## Overview

The M1.5x5 Buna-N O-Ring is a high-performance sealing solution made from durable Buna-nitrile, designed to withstand a wide range of fluids and extreme temperatures. With a hardness rating of 70A, these O-rings provide reliable sealing for various applications, ensuring longevity and efficiency. Available in a convenient pack of 100, they are perfect for both professional and DIY projects.

## Description

This O-ring is made of Buna-nitrile (also called Buna-N), 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, resistance to abrasion, tear, and compression set resistance. It is acceptable for temperature applications between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C). It 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 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 cylinders of various sorts. 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 a number of sizes, and can be ordered based on required nominal inside diameter (ID), outer diameter (OD), and cross-sectional (CS) diameter.

## Features

- Made of Buna-nitrile 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

## Images

![M1.5x5 Buna-N O-Ring, 70A Durometer, Round, Black, 5 mm ID, 8 mm OD, 1.5 mm Width (Pack of 100) - Image 1](https://m.media-amazon.com/images/I/619EOdOOPiL.jpg)

## Available Options

This product comes in different **Outside Diameter, Inside Diameter String, Number of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    HORNADY LOCK N' LOAD USERS... THESE ARE FOR YOU!
  

*by L***E on Reviewed in the United States on February 17, 2015*

RELOADERS REJOICE!  Are your Hornady Lock N' Load bushings allowing the dies to pop out of your press from time to time?  Is it especially problematic for your powder measure?  These O-Rings are the answer.  Sure Hornady will send you a metal shim that supposedly corrects the "slippage" problem, but these work so much better and actually fixes the problem cheaply once and for all.  They are slightly thicker than the standard Hornady O-Ring that come on the bushings and assure a tight fit with no movement.  These are the rings Hornady should have used in the first place.  And at this price for 100 O-Rings and two day shipping with Amazon Prime... how can you go wrong?  Life is too short for "good enough" or "workarounds"  Just buy them... you will not regret it.

### ⭐⭐⭐⭐⭐ 







  
  
    Singer 66 Friction Wheels with 3/4" Bobbin Winders
  

*by S***K on Reviewed in the United States on August 22, 2020*

I purchased these because the bobbin winder on an old 1910 Singer 66 sewing machine would not fit what everyone advertised.  Those are 5/8, but the bobbin friction wheel is 3/4". I went with a 30mm outside diameter and an inside diameter of 22mm, and they fit well. It's the only "replacement" friction wheel I could find, and it works.

### ⭐⭐⭐⭐⭐ 







  
  
    Starter O-Ring seal for Yamaha TW200. Fits perfect.
  

*by T***N on Reviewed in the United States on February 4, 2017*

Bummer that I had to buy a 50 piece bag of these for replacing only one O-Ring. I had a small amount of oil weeping from my motorcycle starter, so I measured the old one and found these available online. The OE version costs almost half, but you only get one.  I get 50 here, and I can give away a bunch of them to other guys who have the same motorcycle as me (Yamaha TW200). Put a little grease or oil on the new one before installing, seals up tight. cheap cheap cheap easy fix.

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**Shop now:** [https://www.desertcart.com.om/products/9127996-m1-5x5-buna-n-o-ring-70a-durometer-round-black](https://www.desertcart.com.om/products/9127996-m1-5x5-buna-n-o-ring-70a-durometer-round-black)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-04*