Buna n nitrile and viton are the most commonly found o ring materials compatible with gasoline. Explosive decompression when elastomer seals are exposed to high pressure gas for a prolonged period the gas permeates into the seal material.
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O ring material for gasoline. Buna n viton and epdm. Reference guide for o ring materials material use with do not use with comments nitrile buna n air water oils acetone lube oil good wear resistance autoaircraft duro. O ring material family chemical compatibility temperature resistance and other properties all factor in to o ring material selection for an application. Get durable buna n and viton o rings from grainger to help tightly seal connections in a wide range of industrial applications. 70 standard fuels gasoline brake good compression set resistance temperature. Many of the regular black o rings are butyl rubber which will break down in gasoline.
Slightly harder durometer 75 shore a fluorocarbon viton rings can offer low swell and resist a diverse range of chemicals uv light and ozone. Broad chemical resistance transmission and blended gasoline. Static applications of o rings may include fluid or gas sealing applications in which. O rings are installed in order to seal off connections between connectors pipes tubes etc. O ring material quick reference guide rubber sealing materials. Fluorocarbon viton fkm.
Basic o ring chemical resistance compatibility information is based on isolated generic o ring material testing in optimal conditions at room temperature and pressure. The term buna n is really not much more specific than the term steel. The high fluorine levels in fluorocarbon rings give them excellent swelling and permeability resistance. 15 to 400 degrees fahrenheit. For the purposes of this article we will focus on just three common rubber types found in o rings and similar automotive seals. Buna n rings with durometer 70 shore a can offer hood physical properties and provide excellent resistance to petroleum products.
O ring chemical compatibility chart learn how different o ring materials and chemicals interact. O rings are one of the most. They also feature high temperature and chemical resistance. Heres a very complete reference. 1 the o ring is compressed resulting in zero clearance 2 the o ring material is vulcanized solid such that it is impermeable to the fluid or gas and 3 the o ring material is resistant to degradation by the fluid or gas. Pantaz mechanical 20 dec 04 2233.
This popular o ring material family comparison shows basic rubber material family properties and performance plastic properties. These seals have a simple donut shaped ring technically called a toroid and are manufactured using pliable material such as elastomers like silicone buna n and ethylene propylene. Markez is similar to kalrez and chemraz at significant cost savings and custom o ring sizes are supplied without additional tooling or setup charges. Note that each type is actually a family of rubber compounds. 35 to 250 engine coolant lpg fluids automatic good short term resilience.
Gallery of O Ring Material For Gasoline
