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MECHANICAL SEALS

Nippon Pillar has provided various types of mechanical seals with secure high gas-tightness
since 1951 when the Company first developed a mechanical seal to prevent the leakage of hazardous fluids. These mechanical seals are applied in a wide range of industries, including petroleum refining, chemical, paper milling, steelmaking, water supply and sewerage, food processing and ship building. Nippon Pillar's mechanical seals are fully compliant with JIS and ISO standards and deliver a stable performance even under the harshest operating conditions.

POWER PLANT

Type GAKQM Cassette Seal (Outside type)
Features & Benefits
This is cassette type seal providing easy installation. Replacement from gland packing is not required any modification such as ISO and DIN standard pumps. The use of SiC having high degree of hardness allows for use with liquid containing solid particles.
Performance
Pressure: 0.8MPa Temperature:-20~150℃ Size: 20~100 Application: Oil, Water (max solid particles concentration: 5wt%)
Type GAKQM

Type AAB Rotating multi-spring seal
Features & Benefits
For General application
This type is widely used for wide application in many industries.
Performance
Pressure: 3.43MPa, Velocity: 20m/s, Nom.size: <:>20-250
Application: General pumps
Code: MS-AAB30-KEBOO - (Size), Tungsten Carbide (SiC) vs. Carbon & Fluoro Elastomer, 316 SS

Type QBS Welded metal bellows seal
Features & Benefits
For High Temperature
This type is stationaly type using welded double metal bellows which has superior pressure resistance.
This has no stick-slip and superior heat resistance as no shaft packing is employed.
Performance
Pressure: 3.0MPa, Velocity: 60m/s, Nom.size: $23-136
Application: Oil feed pump, Fuel transfer pump
Code: MS-QBS20-PXKOO - (Size), Tungsten Carbide (SiC) vs. Premium carbon & Fluoro Elastomer, 316 SS

Type JAB Stationary floating ring seal (For heavy duty)
Features & Benefits
For High load Application
This type is widely used for high speed, high pressure and big pressure fluctuation.Carbon floating ring can accommodate big pressure fluctuation owing to its symmetrical shape. The pump fluid can be flushed effectively through lots of holes on this ring to dissipate the heat generated on the faces.
Performance
Pressure: 10.0MPa, Velocity: 80m/s, Nom.size: <:>50-250
Application: Boiler feed pump, Main pump for nuclear power plant
Code: MS-JAB25-R- (Size), Tungsten Carbide (SiC) vs. Premium carbon & Fluoro Elastomer, 316 SS

Type 6521L Carbonized fiber packing
Features & Benefits
For General Pump
This is made of carbonized fiber impregnated with PTFE dispersion, and lattice braided with special lubricant. This has much enhanced performance than our popular type 6501l. This packing can accommodate big pressure fluctuation, so can be used widely in rotating/reciprocating equipment.
Performance
Temperature: 200'C, Pressure: 1.2MPa, Velocity: 20m/s,
PV value: 9.8MPa-m/s
Application: Sea water pump
"'Cooling is required for liquid over BO"C
Code: GP-6521 L- (Size)

 

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