Garlock Chemical Resistance Guidelines
The following tables list the most commonly used materials, chemicals, solvents, oils, etc. The tables do not imply conformance to the Food and Drug Administration requirements or Federal or State Laws when handling food products, chemicals, or dangerous or toxic materials.

The following chemical list is offered as a guide to the chemical resistance properties of Garlock Style 9518, 505, and 509. It should be used as a guide only, since the degree of resistance of any elastomer to a particular fluid depends upon

 

such variables as temperature, fluid concentration, pressure conditions, velocity of flow, duration of exposure, aeration, stability of the fluid, etc.

Therefore, when in doubt, you should not rely solely on this guide in critical nature applications. Critical nature applications are those where personal safety, life and property damage could occur due to premature failure. Tests should be devised that simulate actual service conditions as nearly as possible.

   

WARNING:

Testing can be dangerous and should be done only by trained personnel using proper tools and procedures. Failure to follow such procedures might result in damage to property and serious bodily injury. Contact your Garlock representative for technical assistance.
 

Restrictions On VITON® Fluoroelastomer

Due to its extensive range of chemical resistance, the listings for Style 9518 are only partially shown in this publication.

Certain families of chemicals will attack and degrade parts made with VITON®. This chemical attack may cause Style 9518 to lose its ability to maintain a seal. These chemical groups include:

1. Low molecular weight ketones
2. Esters, such as ethyl acetate
3. Amines
4. Strong bases, such as sodium hydroxide
5. Alkyl phosphate esters
6. Hot anhydrous hydrofluoric acid
7. Chlorosulfonic acid
8. Hot concentrated alkalies
9. Some proprietary fluids such as SKYDROL 500A

For resistance to chemicals other than those in this listing, contact Garlock at (800) 643-0134.

VITON® is a registered trademark of DuPont Dow Elastomers

  

Maintenance and Inspection


The user must regularly inspect all flange connections, valve connections, and sealing devices incorporating rubber as the sealing member, ESPECIALLY THOSE APPLICATIONS IN HIGH HEAT ENVIRONMENTS. The inspection procedure should include periodic checks such as:

1. Check for signs of leakage around fluid sealing areas.
2. Use leak detection devices for gas leakage.
3. Monitor actual operating temperatures.
4. Examine old gaskets or parts for evidence of potential sealing problems—compression set, tears around flange bolts, brittleness, swelling or other physical degradation.
5. Use standardized industry data for installation methods, test methods for specific application tests: ASTM—Volumes 09.01 and 09.02 Rubber Products, Industrial.
6. Develop a preventive maintenance checklist and keep a log detailing inspection results.


   Chemicals (Alphabetical)
ACETALDEHYDE  thru
BENZOIC ACID
  BROMINE  thru
ETHYLENE DIBROMIDE
ETHYLENE DICHLORIDE  thru  METHYL OLEATE
 

MINERAL GREASES  thru
POTASSIUM ALUMINUM

POTASSIUM SULFATE  thru
VARNISH
VEGETABLE GREASES  thru
XYLENE
SHEET RUBBER
PRODUCTS
PERFORMANCE CHARACTERISTICS
 
Chemical Resistance
Performance Characteristics
 
 
GARLOCK RUBBER TECHNOLOGIES | P. O. BOX 1000 | PARAGOULD, AR 72451 | 870-239-4051 | AN ENPRO INDUSTRIES COMPANY