Mechanical seal types pdf

ACM Is A Leading Manufacturer Of Security Seal s. We Specialize In Rush Orders. View our full line of bolt seals. Available with custom print. Fixed length metal Strap Seal.

Operates with zero friction.

Variety of sizes in stock from Houston. Get Quality Face Seal s from Top Brands at MSC. All face-type mechanical seals consist of a primary seal , secondary seal , and mechanical loading device.

The flatness of these faces is the most precision-critical characteristic of any mechanical seal. The faces must be stable, conduct heat, be chemically resistant, and provide good wear characteris-tics. Seat and you can subtract 0. They must also be easy to manufacture, readily available, and economically priced.

Type G Rubber bellows seal with reduced seal face Rubber bellows seal like type B but with a narrow seal face.

Due to the narrow seal face, the seal performs well in high- viscosity and anti-freeze liquids. Mechanical shaft seal types and sealing systems. What is the purpose of a mechanical seal? How to select a mechanical seal?

Why use mechanical seals? Temperature: -20°C~150°C Pressure: ≤0. In a lip- seal - type mechanical seal , a thin film of sealed fluid also lubricates the sealing interface.

Rather than two flat rings, the sealing interface is a polymer material deflected against a hard material. This material could be a hardene coated or plated metal, ceramic, or carbide face or sleeve. Seal Faces The seal faces of a mechanical seal provide a demanding set of requirements for a seal designer.

Most pump shafts today are sealed by means of mechanical seals. Instead the torque is driven along the rubber bellow which fits on the shaft. These seals are generally used in sewage applications and waste water pumps. The assembly is “pre-set” so that no installed length calculations must be performed for determining where to set the seal. Stationary mechanical seal in inch dimensions.

Spread throughout the worl this type of mechanical seal has reached an unsurpassed quali-ty level. The BT-Afeatures all carbon or high quality resin impregna-ted carbon, aluminium oxide , is stationary and the rubber bel-lows are glued on collar. Static air pressure test to 1 production.

Teflon Bellow seals ( Type : GTB) These are suitable for handling most of he corrosive media. A lip-type mechanical seal may only require static secondary seals because the deflection of the lip-type seal accommodates equipment operating motion. All effective end- or rotary-face mechanical seals require at least one dynamic secondary seal.