What Is P Seal And How To Install It?

What is P seal and how to install it?

October 11. 2021

P Seal is a static seal comprising a profiled elastomeric sealing element with two anti-extrusion metal rings or stainless steel wire mesh rings. It is used in casing and tubing heads to seal rough casing and production tubing.

In operation, the inside diameter (primary sealing face) of P Seal acts on the outside diameter of the casing/tubing running through it. The groove/recess in the opposite face of P-Seal accommodates the anti-extrusion rings to energise the system and create an effective seal. JST P Seals have been tested with pressure 20000psi.

Primary sealing element: either homogenous elastomer or rubberised fabric - a wide selection of top quality elastomers and fabric materials suitable for oilfield duties is available to meet customer specifications.

Anti-extrusion elements: mesh of compressed stainless steel wire to BS EN 10088-3-1.4436 (formerly Grade 316 S33).

Standard P seal sizes are as follows:

P seal sizes