Why Brown Viton O-Rings Outperform Nitrile & EPDM in Harsh Chemicals

author: Qishine Industry

2023-05-16

One-Minute Overview

Brown Viton is an FKM fluoroelastomer O ring for harsh service.
It handles -15°F to 400°F (-26°C to 204°C) and up to 500 psi.
It resists acids, alkalis, solvents, ozone, and UV.
It beats nitrile and EPDM on heat and chemical resistance.

What Is Brown Viton (FKM) O Ring Material?

Brown Viton O rings, also called FKM Viton O rings, are elastomeric sealing rings made from a fluoroelastomer. They give superior sealing in automotive, industrial, medical, and aerospace work, and they resist extreme temperatures, chemicals, and oils, as well as ozone, UV, and weathering, so they suit outdoor duty too. As a general-purpose gasket and seal they come in many sizes and shapes. Compared with nitrile, silicone, and EPDM, FKM is more resistant to chemicals, oils, and temperature, and to ozone, UV, and weathering, and it withstands higher pressure and temperature with better abrasion resistance.

Benefits of Brown Viton O Rings

Brown Viton O rings are used across industry because fluoroelastomer resists a wide range of chemicals, oils, and temperatures. Their main benefits are:

Durability: they withstand -15°F to 400°F, suiting automotive, aerospace, and chemical processing.
Chemical resistance: they resist acids, alkalis, and solvents, so they handle chemical exposure.
Low compression set: they keep their shape and seal even after long periods under load.
Low cost: they are relatively inexpensive compared with other high-performance sealing devices.

How to Select the Right Brown Viton O Ring for Your Application

Selecting the right brown Viton O ring starts with size, since the ring must fit the installation groove; one too small or too large will not seal. Next check the temperature range: brown Viton is rated -15°F to 400°F, so choose a different material above that. Then chemical compatibility: FKM resists petroleum products, acids, and alkalis, but confirm it suits the specific chemicals present. Finally the pressure range: brown Viton handles up to 500 psi, so pick another material above that. Weighing size, temperature, chemical compatibility, and pressure gives a seal that performs, including on a flange joint.