The selection of the proper nonmetallic seal materials must start with an agreement between the user and the vendor determining exactly what is expected of the equipment to be purchased. Chemical, thermal, and pressure conditions that exist in the environment must be outlined as completely as possible and discussed before this agreement is reached. This standard has been developed by NACE Task Group T-1 G-17, a subcommittee of Unit Committee T-1G on Protective Coatings, Elastomers, and

Other Nonmetallic Materials for Oilfield Use, to aid and formalize this outlining procedure. With the availability of this standard, seal material options can be considered intelligently.

This standard is published by NACE under the auspices of Group Committee T-1 on Corrosion Control in Petroleum Production.

1.1 For proper analysis of the seal systems required, this standard contains a worksheet that is to be completed prior to equipment selection.

1.2 The worksheet shall be completed with as much of the information as is available.

1.3 If any of the components listed in the section on "Media" are known not to be involved in this application, then the component shall be listed as "not applicable" ("N/A").

1.4 The information requested under the heading "Operating Conditions· is critical for the proper selection of sealing systems. As much information as is available shall be included.

1.5 If any of the types of chemical exposures shown in the section on "Chemicals and Materials to Be Encountered" will not be encountered in a specific application, mark that section "N/A."

1.6 If a certain type of seal is known to be desirable for the application, then it shall be indicated under "Additional Remarks."

1.7 Other chemical exposures or unusual conditions present for the application shall be listed under "Additional Remarks."

Historical Document 1996