Seal Technology
Sentry Wellhead Systems manufactures, and supplies elastomer and metal seals to our customers. Designs are for drilling applications, completion applications and wellhead equipment replacement parts. All seals meet the new stringent design acceptance criteria per API for tolerances.
Oilfield elastomers must be reliable for low-pressure, general service or critical-service wells. We utilize special compounds and designs for situations that require increased service life and efficiencies. Sentry Wellhead Systems has the product to meet your technology needs with the latest solutions for time saving applications.
Elastomer Seals
All Sentry seals meet API Spec. 6A, Appendix F, Performance Requirement Level Two (PR-2) for pressure and temperature cycle testing. Sentry proprietary elastomeric compounds are utilized, rated for all API material classes, including HH which may be used in H2S, or CO2 service; amine resistant. Elements within the seals including anti-extrusion components are continuous. Anti-extrusion devices are integrally molded into the seal element, making them easier to install and more durable. Proper squeeze, volume fill and stretch under all API/Sentry tolerance conditions, (i.e., the largest diametric gap possible and the worst-case misalignment of sealing surface.
Metal Seals
Sentry Wellhead Systems’ patented “bump” seal design has addressed many issues traditionally associated with metal seals today, a technological breakthrough for wellhead equipment. Sentry Wellhead Systems’ metal seals are rugged enough for oilfield operation, have simple installation procedures, easily tested after installed and are reusable in most cases. In most applications Sentry’s metal seals are “self-energizing” and do not rely on a wedging action, suspended weight or flange make-up force to affect a seal.
Sentry metal seals meet API Spec. 6A, Appendix F, Performance Requirement Level Two (PR-2) for pressure and temperature cycle testing and are rated for all API material classes, including HH which may be used in H2S, or CO2 service; amine resistant. Sentry metal to metal seals can be made from almost any high-strength steel or corrosion-resistant alloy and utilized for applications where long life is a requirement (15,000 psi +).
