Rubber Coupling Seal | Rubber Gasket for Universal Couplings | Pipe Coupling Seal | Quick Connector Rubber Seal | Camlock Seal

 

What Seal Do I Need For My Quick Coupling System?  

 

There are a number of considerations when choosing the correct seal. Quick couplings are often used in fluid lines and choosing the right seal is important to the operational performance alongside, specifications such as pressure and flow requirements. 

Choosing the right seal is vital and can be the difference between a fully working system or a quick coupling system that is likely to fail. There are two main factors to take into account; the chemical compatibility between the seal material and the medium being transferred and the heat tolerance or the operational temperature.

Here we have compiled a quick reference guide of the most commonly used quick disconnect seals and the applications they are recommended for.

 

FPM, FKM & Viton Seals

Fluoro-Rubber Seals for Quick Couplings

As can be seen, there are a few variations of the abbreviations for this staple material. This can cause confusion, but essentially FPM, FKM and Viton are all one and the same base material, Fluoro-Rubber.

Fluorocarbon Rubber Seals are the most frequently used seals in most quick coupling systems.

•         FPM - is an international abbreviation and is in accordance with both the ISO and DIN standards  
•         FKM - is used to stand for Fluoroelastomer and this is used in accordance with the American Standard
•         VITON – this is, in fact, a brand name and is the registered trademark of DuPont Performance Elastomers

Operational Temperature: -20 to +400 deg.F (-28deg.C to 204deg.C)

 

FPM Seals are recommended for:

•         Petroleum Oils
•         Di-ester Base Lubricants
•         Silicate Ester Base Lubricants

 

Nitrile or Buna Nitrile (NBR) Seals for Quick Disconnect Fittings

Another commonly used seal type for quick couplings, the Buna Nitrile seal is usually fitted as standard.

Operational Temperature:  -65 to +250 deg.F (-53deg.C to 121deg.C)

 

NBR Seals are recommended for:

•         General Purpose Sealing
•         Petroleum Oils & Fluids
•         Water
•         Silicone Greases & Oils
•         Di-Ester Base Lubricants
•         Ethylene Glycol Base Fluids

 

 

Ethylene Propylene Rubber (EPM) Seals for Quick Couplings

Probably the most versatile of all the seal materials, these seals feature a wide temperature range and are compatible across of a number of mediums.

Working Temperature Range -65 to +300 deg.F (-53deg.C to 141deg.C)

EPM is recommended for:

•         Phasphate Ester Base Hydraulic Fluids (Skydrol, Cellulube, Pydraul)
•         Steam (to 400 deg F)
•         Water
•         Silicone Oils & Greases
•         Diluted Acids
•         Diluted Alkalies
•         Ketones
•         Alcohols
•         Automotive Brake Fluids

 

 

Chloroprene Rubber (CR) or Neoprene Seals for Quick Disconnect Couplings

A slightly more exotic seal - available on request

Neoprene (Polychloroprene or PC-Rubber) is a synthetic rubber and provides excellent chemical stability whilst maintaining flexibility. A wide temperature range is also possible with Neoprene seals. 

Working Temperature Range -65 to +300 deg.F (-53deg.C to 148deg.C)

CR Seals are recommended for:

•         Refrigerants (Freon, NH3)
•         High Aniline Point Petroleum Oils
•         Mild Acid Resistance
•         Silicate Ester Lubricants

We hope this guide is helpful in outlining some of the most common types of seal used with quick disconnects, but you may want to also check out some further resources. You may freely contact our sales team for further discussion.

Rubber Coupling Seal | Rubber Gasket for Universal Couplings | Pipe Coupling Seal | Quick Connector Rubber Seal | Camlock Seal

Supplier	:	Rugaval Rubber Sdn Bhd
Email	:	rugavalrubber@gmail.com
Phone	:	60351918961
Fax	:	60351915961
Location	:	Selangor, Malaysia

Send us your enquiry if you have questions or comments about our products and services.