Elastomer Seals

Ensure wellhead integrity and functionality

Seals are essential elements in the integrity and functionality of your wellhead equipment. The ability of a wellhead to operate in demanding pressures and temperatures is determined by the integrity of its sealing system. As a well is completed, the role of the wellhead seals is to isolate the increasingly higher pressure zones as each succeeding section is installed, from the starting head to the production tree.

Lock screw packing

Type N field-replaceable lock screw designed with the packing element installed inboard of the screw threads
Prevention of contamination by wellbore fluids and buildup of solids behind the screws
External oil seal that retains grease and protects screw threads from atmospheric corrosion
Metal-capped graphite packing elements for HPHT applications

MEC metal end-cap seal

Radially squeezed and pressure energized
Large section size for greater contact area and ability to seal against surface defects
Tolerance of surface imperfections such as those caused by casing centralizers
Primary barrier to annulus fluids

P radially energized elastomer injection seal

Use as a crossover where moderately severe service is expected
Antiextrusion rings that protect the seal from high pressure loads and hold the seal in place for ease of installation
Energizing by injecting plastic packing between wellhead body and seal, which maintains constant pressure of the seal onto the casing stub affecting the seal

S radially energized, rounded face, nonextrusion elastomer seal

Elastomeric-interference-type seal
Radial energizing
Rounded seal face that facilitates simple and safe installation
Greater sealing contact area and the ability to seal against surface defects
Molded metallic components on top and bottom to permit safe installation and prevent extrusion of the elastomer under pressure

SB hanger seal

Premium slip-type casing hanger seal
Robust lip seal seals in the casing bowl, around the casing, and around the retainer bolts
Spring coils that are molded into the corners of the seal element to provide extrusion protection in higher-pressure and -temperature applications
Supported by an independent shoulder located above the slips which allows replacement at full-rated casing load capacity
Load tested up to 3,000,000 lbm

T radially energized, square cut, nonextrusion elastomer seal

High-grade elastomer materials
Scarf-cut, square section, antiextrusion rings that eliminate extrusion gap
Ability to seal on rough casing
Radial energizing
Capability of sealing at temperatures, extrusion gaps, and surface finishes too extreme for other elastomeric seals
Use as crossovers where moderately severe service is expected