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Diesel & Gas Engines(Marine / Power Generation) article


Marine engine Gas engine Power generation
Marine engine Gas engine Power generation
 
Engines developed for marine propulsion and power generation have to operate in increasingly challenging conditions due to environmental legislation and increasing fuel costs.

Sealing technology is becoming a more critical part of engine development and is often a limiting factor in engine performance.

Seals are often exposed to aggressive combinations of coolants and oils at extreme temperatures, while expectations for seal performance and lifetime are increasing.

comprehensive range of high performance materials specifically developed to meet the sealing needs of the industry.

Typical applications include:-
  • Cylinder liners
  • HP diesel, HFO & gas injectors
  • Inlet & exhaust valve seats
  • Turbochargers
  • Heat exchangers
  • Pipe connectors
  • Hydraulic systems
  • Sump, access covers and rocker covers


PPE offers a complete range of engineered solutions for engine sealing requirements :
  • Precision O-rings
  • D-rings
  • U-section seals
  • Lip seals
  • Extruded profiles
  • Custom profiles
  • Composite parts
 
Elastomer grades for large diesel & gasengines
Material
Type
PPE Code Description Hardness Temperature
Range(°C)
Colour
EPDM
 
E70K
 
Excellent water &
coolant resistance
74 -40 to +125 Black
NBR N70J
 
 
N70L
 
 
N70M
Med-high acrylonitile -
excellent oil & abrasion
resistance
Low-medium
acrylonitile - excellent
oil resistance
Medium acrylonitile -
excellent oil &
fuel resistance
73
 
 
70
 
 
75
-30 to +210
 
 
-40 to +210
 
 
-40 to +210
Black
 
 
Black
 
 
Black
FKM
(FPM)
V71C
 
 
V74C
 
 
 
V75G
 
 
 
V75J
 
 
V75L
 
 
V76E
 
 
V80D
 
 
V95X
 
V97B
 
 
 
Extremely
low temperature
capability - terpolymer
Extremely
low compression set,
excellent heat ageing -
copolymer
Excellent resistance to
oil, fuels and
hydraulic fluids -
copolymer
Excellent water &
steam resistance,
peroxide - terpolymer
Excellent resistance to
water, steam, oils &
fuels - copolymer
Kemex™ - exceptional
fluid resistance -
tetrapolymer
Excellent resistance to
air and petroleum -
copolymer
High pressure resistance
- copolymer
Anti-extrusion,
high pressure, oil &
fuel resistance -
terpolymer
72
 
 
75
 
 
 
71
 
 
 
75
 
 
75
 
 
75
 
 
78
 
 
91
 
95
 
 
 
-45 to +225
 
 
-18 to +225
 
 
 
-20 to +200
 
 
 
-15 to +200
 
 
-15 to +200
 
 
-20 to +206
 
 
-20 to +225
 
 
-20 to +200
 
-10 to +225
 
 
 
Black
 
 
Black
 
 
 
Green
 
 
 
Black
 
 
Black
 
 
Black
 
 
Black
 
 
Black
 
Black
 
 
 
VMQ
 
 
 
 
S60R
 
 
S70R
 
General purpose
silicone, ideal for
coolant sealing
Excellent heat resistance
ideal for dry heat static seals
60
 
 
70
 
-60 to +250
 
 
-50 to +250
 
Red
 
 
Red
 
HNBR Z70B Medium acrylonitile -
excellent resistance to
oil additives
70 -30 to +180 Black
FFKM
(FFPM)
G75B
G80A
Perlast® perfluoroelastomer grades - ultimate chemical resistance
and suitable for very high temperature applications
78
80
-15 to +325
-15 to +260
Black
Perlast® and Kemex™ are registered trademarks of Precision Polymer Engineering Ltd
 
Material datasheets can be downloaded from the PPE website :
 
Typical applications :
Location E70K G75B N70L N70M V71C V74C V75G V75J V75L V76E V95X V97B Z70B
Cylinder liners               * *        
Exhaust valve seats   *           *          
Valve stem seals             *           *
Pre-heat chamber   *           *          
Fuel system         *   * *   *      
Common rail lines                     * *  
Coolant systems *           * * *        
Hydraulic systems       *                 *
Turbo charger   *       *              
Manifold gaskets           *   * *        
Head Gaskets           *   * *        
Shaft seals     * * *                

 

 

 
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โทร : 0-2719-7300 - 8
โทรสาร : 0-2719-7309
อีเมล : info@thaiseal.com

Line ID : @thaiseal

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