Mechanical devices used in static or dynamic applications to separate two liquids or gasses or prevent the ingress of contamination.

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Accordion bellows and protective boots are convoluted, expandable, fabric or elastomer components used to protect screws, shafts, slide ways and other components from liquid, chips, dirt and other debris.
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Back-up Rings (113 suppliers)

Back-up rings or anti-extrusion rings are washer-like devices used to prevent seals from extruding through gaps while under pressure. Seals are installed in the downstream side of the gland.
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Bearing Isolators (45 suppliers)

Bearing isolators are dynamic seals designed to protect bearings from outside contaminants.  They are comprised of a rotor (rotating) and stator (stationary) member.
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Bonded Seals (59 suppliers)

Bonded seals are metal washers with a rubber insert bonded to the inside diameter for use in high pressure applications.
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Brush Seals (18 suppliers)

Brush seals are used as a barrier against flying debris and liquid. They are also used to reduce or block the infiltration of light or air flow.
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Grips, caps and closures are protective devices for the ends of a shaft, tube, pipe, fitting, connector, screw, bar, or other shape. They can also be used to provide a hand grip or hanger tip.
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Compression packing seals or gland seals are deformable materials used to prevent or control the leakage of fluid between surfaces that move in relation to each other.
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Conical and telescopic screw covers are used to protect ball, acme and lead screws from contaminants.
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Diaphragm Seals (103 suppliers)

Diaphragm seals are isolation devices that separate a pressure instrument from the process media.
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Diaphragms (71 suppliers)

Diaphragms are flexible sealing element components that are used in pump, valve, and diaphragm seal applications. They provide a barrier between two chambers.
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Die Cutting Services (547 suppliers)

Die cutting services use a variety of die cutting methods to fashion materials into predefined shapes or sizes.
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Dynamic Seals (650 suppliers)

Dynamic seals include oil seals, hydraulic and pneumatic seals, exclusion seals, labyrinth seals, bearing isolators, and piston rings. They create a barrier between moving and stationary surfaces in applications such as rotating shafts and pistons rings.  This is a general search form; more detailed search forms are available.
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Electrical connector bases and covers are designed to provide mechanical protection for electrical connectors. They are available in many shapes and sizes to accommodate different types of electrical connections.
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Exclusion Seals (128 suppliers)

Exclusion seals are comprised of wipers, scrapers and V-ring seals.
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Flange Protectors (16 suppliers)

Flange protectors are designed to protect flanges from damage during shipping, or from exposure to corrosive elements.
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Expansion joints connect two fixed assemblies or pipes and provide allowance for movement due to service load, shock, or thermal cycles.
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Gaskets and Gasketing (1,303 suppliers)

Gaskets are used to prevent fluid or gas leaks by providing a barrier between two mating surfaces.
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Hermetic seals provide a vacuum or leak tight seal such as a brazed glass-to-metal seal.
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Hydraulic seals and pneumatic seals include piston seals, rod seals, U-cups, vee, cup, and flange packings.
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Inflatable Seals (28 suppliers)

Inflatable seals are elastomeric tubes designed to round out with the introduction of a medium (usually air) to form an tight barrier between a mounting and striking surface.
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Labyrinth seals and clearance seals are minimum-leakage seals that protect machine elements from contamination through a noncontact method. They operate on the principle of positive clearance and do not rub on shafts or housing. 
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Machine Way Wipers (45 suppliers)

Machine way wipers provide a seal between a machine slide or way and a stationary surface.
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Mechanical Seals (341 suppliers)

Mechanical seals including mechanical face seals, bellows, gas seals, and cartridge seals.
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Metal Bellows (148 suppliers)

Metal bellows perform a number of tasks including sealing environments, carrying gases, liquids and slurry, and mechanically coupling for electrical contact.
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Metal Ring Seals (78 suppliers)

Metal ring seals are static devices that can withstand high operating temperatures, pressures, and vacuums. They can also withstand cryogenic conditions and high face-to-face cycling.
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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.
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O-rings (721 suppliers)

O-rings are solid-rubber seals that are shaped like a doughnut. When pressed between two mating surfaces,  O-rings block the passage of liquids or gases.
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Piston Rings (108 suppliers)

Piston rings are used for sealing cylinders.  They can work at higher temperatures than elastomeric, fabric, or polymer seals.
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Plugs, stoppers and inserts fit into holes or cavities and are designed for the ends of shafts, tubes, pipes, fittings, connectors, screws, bars, or other shapes.
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Solid elastomeric rings are compression seals of differing cross sections. Some examples are X or multiple rings, rectangular rings, tetraseals, trapezoid rings, T-section rings, delta rings, D-rings, H-rings, heart rings, and diamond rings.
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Switch Sealing Boots (50 suppliers)

Switch sealing boots protect switches from contaminants such as dirt, dust, gas, and liquids. They are generally tough, pliable silicone rubber devices for toggle, pushbutton, rocker, and rotary switches.
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V-ring Seals (41 suppliers)

V-ring seals are all-rubber seals used primarily to exclude dirt and other contaminants. They are stretched over shafts and seal against the side of housing or another machine component.
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Way covers and way shields are machine tool accessories used to protect the rail or way of a machine from contamination and abrasive cuttings. Way covers come in two common styles: bellows type and telescoping type.
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