Mechanical Seals

BROCHURES - Mechanical Seals (PDF)

TYPES - Conical Spring, Elastomeric Bellows, Parallel Spring Diaphragm, Balanced Diaphragm, Parallel Spring O Ring Mounted, PTFE Wedge, Wave Spring, Water Pump Seals, Cartridge Seals, Agitator Seals, Mixer Seals and many more.

BRAND NAMES AVAILABLE - Vulcan, AES, John Crane, Sealol, Flexibox

MATERIALS AVAILABLE

Standard Face Materials - Carbon, Stainless Steel, Tungsten Carbide, Ceramic, Silicone Carbide, Ni-Resist

Standard Seat Materials - Carbon, Silicone Carbide

Replacement Seals are available for the following makes of pumps:

ALCON, ALFA LAVAL / S.S.P, A.B.S, A.P.V / PUMA / W & W+, ARMSTRONG / HOLDEN & BROOK / PULLEN, CALPEDA, CAPRARI, CREST, DAB, EBARA, EMU, FLOWSERVE, FLYGT, GNL, FRISTAM, FULLWOOD PACKO, GODWIN, GIRDLESTONE, GILKES, GRUNDFOS/SARLIN, HAIGH MACERATOR, HIDROSTAL, HILGE, INGERSOL DRESSER/RAND INOXPA PROLAC, JOHNSON / STORK, K.S.B, LOWARA / GOULDS, MDM, MONO, PEDROLLA, ROBOT, STIRLING / SIHI / LABOUR, SMEDEGARD, SPP, STUART TURNER, TUCHENHAGEN, VIKING, WAUKESHA

Compressor Seals are available for the following refrigeration OEM applications

APV HALLS, BITZER, BOCH, CARRIER/ CARLYLE, COPELAND, DAKIN, DUNHAM BUSH, FRICK, GRAM, GEA GRASSO, J & E HALL, HOWDEN, LIGHTFOOT, SABROE, STAL, THERMO KING, WITT, ZANOTTI

Barnwell offer a vast range of mechanical seal designs to suit all types of pumps and compressors associated with the marine, water treatment, food & beverage, building services and leisure pool pumps amongst others!

The mechanical (or pump seal) is one of the most effective ways of sealing rotating shafts. They usually consist of two lapped faces arranged perpendicular to the axis of the rotating shaft (which gives rise to the alternative name "radial face seal"). One face is fixed to the equipment casing or vessel, while the other is fixed to the shaft and so rotates with it. Frictional heat generation and wear is controlled by maintaining a film of lubricant between the seal faces. As such, mechanical seals resemble thrust bearings. There are three common types of mechanical seals: single, double and cartridge. Mechanical Seals are precision devices, requiring more careful installation and higher initial investment than those of soft packings.

Mechanical Seals have largely replaced packings as the seal of choice in many applications, primarily because mechanical seals offer the following benefits.

• Reduced wear
• Reduced heat generation
• Lower energy consumption
• Reduced maintenance requirement
• Tighter control of shaft leakage
• True reduction of costs