Type ‘FS’ Seals (Secondary Seals) Type FS Casing & Tubing Seal has been developed for arduous duties where there are large clearances between mating parts of wellhead and associated assemblies. It has been tested in accordance with API requirements for use on the surface wellhead to casing systems, where the seal can readily replace the metal end cap and plastic pack sealing arrangement.
Type ‘P’ Seals (Secondary Seals) is an elastomer seal comprised of an injectable, formed seal ring flanked by two anti-extrusion rings. A single seal is recommended for pressures up to 5,000 psi. Used in a double seal configuration, and depending on the size of the seal, the Double P seal can be rated up to 15,000 psi. This easy-to-install, reliable, and field-proven design is one of PARVEEN’s standard, integral, elastomer seals offered with conventional equipment.