Chemical Compatibility

Chemicals (Selected: Sodium Hydroxide)

Elastomers
BoKure™ Urethane	Fair
Chloroprene (CR)	Fair
Ethylene-Propylene (EPDM)	Satisfactory
Fluorocarbon (FEPM - ETP)	Satisfactory
Fluorocarbon (FKM)	Fair
Fluorosilicone (FVMQ)	Fair
Hydrogenated Nitrile (HNBR)	Fair
Nitrile (NBR)	Fair
Perfluoroelastomer (FFKM)	Satisfactory
Polytetrafluoroethylene (PTFE)	No Data Available
Silicone (VMQ)	Fair
Tetrafluoroethylene-Propylene (FEPM)	Satisfactory

Rating	Description	Volume Change	Comments	Code
Satisfactory	Little or no effect	< 10%	Elastomer may exhibit slight swelling and/or loss of physical properties under severe conditions
Fair	Possible loss of physical properties	10 - 20%	Elastomer may exhibit swelling in addition to a change in physical properties. May be suitable for static applications
Severe Effects	Noticeable change	20 - 40%	Elastomer exhibits a noticeable change in swelling and physical properties.  Questionable performance in most applications.
Unsatisfactory	Excessive change	> 40%	Elastomer not suitable for service
N/A	Insufficient info	N/A	Insufficient information for rating

Note:

The information contained in this chemical compatibility guide is believed to be reliable but has been compiled from numerous industry sources and should be used as a general reference guide only. Tests are typically conducted at room temperature. Numerous factors including environment, temperature, exposure time and other conditions can greatly affect the material rating. If you would like more information on chemical compatibilities please contact a Hi-Tech Seals sales associate directly. Hi-Tech Seals Inc. assumes no responsibility whatsoever for use of this guide.

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Material Summary

KasPex™ PEEK

BoKure™ urethane

BoKure™ GHOST

RyFlor™ RF40

TechCera™ Ceramic

WolCar™ Carbide

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