Esmet Sealed Swivels (SSS) Designed for ocean surface applications. These swivels are grease filled and have an o-ring cap seal to prevent entry of sea water. They also contain angular contact ball bearings. All external components are of 316 stainless steel. Available in most Gold Band models, they are dimensionally identical to the 6000 series swivels. Esmet Delrin Swivels The ball bearings of all 3000 and 6000 series swivels can be replaced with a delrin thrust bearing that will not fracture under impact loads. The starting torque resistance of the delrin bearing is slightly higher than the ball bearings.
Esmet Pressure Compensated Swivels (SSP) Designed for deep ocean applications, these swivels are oil filled and include a diaphragm for pressure compensation. They also contain angular contact ball bearings. Available in Gold Band swivel models 65, 66, and 67 only. See the table below for dimensions.
Esmet Free Flooding Oceanographic Swivels (SSMS) Manufactured in 316 stainless steel with a delrin thrust washer, these designs are not affected by the external pressure of ocean depths. The delrin thrust washer will not corrode from salt water entry as will steel ball bearings. They have no internal grease or oil to leak out and pollute the environment. Available in all sizes and most models of Gold Band swivels. SSMS swivels are dimensionally identical to the 6000 series swivels.