Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings.

Oil seals and grease seals have a flexible lip that rubs against a shaft or housing to prevent the leakage or ingress of fluids and dirt

Bearing isolators are dynamic seals designed to protect bearings from outside contaminants.

Diaphragm seals are isolation devices that separate a pressure instrument from the process media.

Foams and foam materials are industrial products made from low density elastomers, plastics, and other materials with various structures and porosities.

Washers are disks of metal or non-metallic material placed beneath a nut, an axle bearing, or a joint, to relieve friction, prevent leakage, isolate, prevent loosening, or distribute pressure

Mechanical vacuum pumps and systems contain devices such as pistons, claws, scrolling spirals, and diaphragms to isolate and compress air