Buna O Ring Material

O ring material quick reference guide rubber sealing materials.

Buna o ring material. Has an operational temperature range of 40 f to 250 f 40 c to 121 c and a hardness range of 40 90 durometer. Buna n o rings also referred to as nbr o rings and nitrile o rings are the most widely used o ring material in the word because of low cost good mechanical performance with resistance to water most basic oils lubricants and some fuels many pneumatic hydraulic systems and the default choice for basic applications. As a sealing option the crucial difference between buna and viton is the temperature range the materials function in. Buna n nbr nitrile.

Buna nitrile o ring material description. This popular o ring material family comparison shows basic rubber material family properties and performance plastic properties. Buna n o rings buna n o rings. O ring and rubber seal materials.

O rings made from nitrile are typically used for general sealing purposes which includes sealing of hydraulic fluids petroleum oils water and so on. Buna n sometimes shortened to just buna is a trade name for nitrile rubber known internationally as nbr. Because o ring material selection is driven by an industrial or mechanical system that system will define which material is best suited to fulfill the application requirements of the o ring. O ring materials compatible with ammonia anhydrous select a material to show its compatible chemicals aflas 0 buna n nitrile 3 butyl 4 chemraz 3 epichlorohydrin 0 ethylene propylene 4 fluorocarbon 1 fluorosilicone 1 hypalon 0 kalrez 4 natural rubber 1 neoprene 4 nitrile hydrogenated 3 polyacrylate 1 polysulfide.

A synthetic rubber with excellent oil resistance and fair to good chemical resistance. Nitrile elastomers are copolymers of acrylonitrile and butadiene. Viton is the choice over buna for high temperature applications. O rings are an integral component in most industrial and mechanical systems.

Buna n also known as nitrile or nbr is a synthetic rubber material. Therefore the best o ring material is the material best suited for the application. What is the best o ring material. Its versatility makes it an ideal material for o rings seals gaskets and custom molded components for all industries and applications.

Nitrile rubber nbr o rings also known as buna n are one of the most commonly used sealing elastomers due to resistance to petroleum based fuels and lubricants and its relatively low price. Which seal for your application. Nitrile buna n o ring the material nitrile also known as buna n or acrylonitrile butadiene rubber functions at a temperature range of between 65 f and 300 f. Nitrile is unique among synthetic rubbers in that it is generally resistant to chemicals such as oil and fuel among other substances such as mineral and vegetable oils diluted acids.

It is normally the least expensive of the rubber types we will discuss here.