Oil States offers three types of passive (non-inflated) grout seals for supporting grout plugs. They can be used as back-up seals to grout packers or stand-alone seals for smaller structures. They also are used to prevent mud contamination of the pile/sleeve annulus during pile driving if mud-barrier diaphragms were used to prevent initial mud intrusion. All the seals tolerate reverse pile movement. They are made of cast elastomer and are available for any pile and sleeve diameter.

Flat Seals
The Flat Seal is typically used as a back-up seal for an inflatable grout packer, since it requires a minimum, nominal jacket/pile annulus of 3 inches (76 mm). Dual Flat Seals can serve as a primary grout seal on smaller structures.

Ell and Dual Ell Seals
The Ell grout seal fits in annuli as small as 1.5 inches (38 mm) but can also be used in large-annulus situations. Dual Ell seals support up to 25 feet of grout and are frequently used on jacket legs that are pressure-grouted.

Bead-Type Wiper/Seal
This seal is installed on the bottom of the pile sleeve, so it can be used with sleeve/pile annuli less than 1.5 inches (38 mm). Since it is welded onto the bottom of the pile sleeve, it can be installed during the final stages of fabrication.