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    Your are in: Home > Random Tower packing > Raschig ring > PTFE raschig ring
 
 

raschig ring
PTFE raschig ring can be made by virgin PTFE (100% pure PTFE) or
PTFE with graphite, or with fiber glass etc.

TEFLON  
CODE # CONSISTS OF DEFINITION OF FILL
TEFLON 101
TEFLON  102
TEFLON 103
TEFLON  104
TEFLON  105
TEFLON  106
5% Glass Fiber
10% Glass Fiber
15% Glass Fiber
20% Glass Fiber
25% Glass Fiber
30% Glass Fiber
Milled glass fibers have the least effect on chemical and electrical properties and add greatly to the mechanical properties of unfilled PTFE. Addition of glass improves compressive properties by as much as 40% and improves wear resistance greatly. These compounds resist acids and oxidation but can be attacked by alkali.
TEFLON 110
TEFLON  111
TEFLON  112
TEFLON  113
TEFLON 114
5% Graphite
10% Graphite
15% Graphite
20% Graphite
25% Graphite
Graphite has good chemical resistance to corrosive environments and exhibits good initial wear and rubbing/sliding characteristics in dry and water applications. Commonly blended with carbon and PTFE.
TEFLON  115
TEFLON  116
TEFLON  118
25% Bronze
40% Bronze
60% Bronze
This filler has better wear, creep resistance, and higher thermal conductivity than glass fiber with PTFE. The compound is easily machined, but has poor chemical resistance in the presence of acids and alkali. Useful in applications which undergo high mechanical loads or high-speed rubbing contacts where the bronze filler supplies the strength and conductivity to carry away excess, unwanted heat.
TEFLON  127 5% Molybdenum Disulfide This filler is used frequently in combination with others to increase surface hardness, stiffness, and to reduce the starting coefficient of friction and steady-state wear. Its effect on electrical and chemical properties is negligible.
TEFLON  130
TEFLON  131
TEFLON  132
TEFLON  133
TEFLON  134
5% Carbon
10% Carbon
15% Carbon
20% Carbon
25% Carbon
Carbon has good chemical resistance to corrosive environments. It exhibits good initial wear and rubbing or sliding contact characteristics, both dry and water applications. It is frequently used in piston rings to reduce cylinder wall wear by entrapping abrasive foreign particles in their relatively soft surfaces.
TEFLON 136
TEFLON  137
TEFLON  138
10% Carbon-Graphite
20% Carbon-Graphite
25% Carbon Graphite
These fillers are used both separately and together in PTFE compounds.
TEFLON  140
TEFLON  141
TEFLON  142
5% Calcium Fluoride
10% Calcium Fluoride
15% Calcium Fluoride
ALTERNATIVE TO GLASS FILL.
TEFLON  151
TEFLON  152
TEFLON  153
TEFLON  155
15% Glass Fiber, 5% Moly
20% Glass Fiber, 5% Moly, 5% Carbon-Graphite
23% Glass Fiber, 2% Moly
25% Glass Fiber, 5% Moly
SEE ABOVE FOR INDIVIDUAL DEFINITIONS.
TEFLON  157
TEFLON  158
TEFLON  159
10% Glass Fiber, 10% Graphite
5% Glass Fiber, 5% Graphite
20% Glass Fiber, 5% Graphite
SEE ABOVE FOR INDIVIDUAL DEFINITIONS.
TEFLON  161
TEFLON  162
10% Glass Fiber, 5% Carbon
5% Glass Fiber, 10% Carbon
SEE ABOVE FOR INDIVIDUAL DEFINITIONS.
TEFLON  170
TEFLON  171
TEFLON  172
TEFLON 173
40% Bronze, 5% Moly
40% Bronze, 10% Moly
55% Bronze, 5% Moly
65% Bronze, 5% Moly
SEE ABOVE FOR INDIVIDUAL DEFINITIONS.
Upon Request, physical testing with test reports available.
(FILLED PTFE) COMPOSITIONS & FILL DESCRIPTIONS

 

 

 PTFE & TEFLON  TYPICAL PHYSICAL PROPERTIES OF VIRGIN PTFE PRODUCTS
 
PTFE Material Virgin Virgin
"Super"
PTFE
Reprocessed Virgin PTFE blended with:
Filler None None None Glass Fiber Bronze Graphite Carbon Glass,
MoS2
Filler Content By Weight 0% 0% 0% 25% 40% 10% 10% 23%, 2%
PROPERTIES
Specific Gravity 2.16 2.16 2.16 2.22 3.30 2.13 2.13 2.25
Tensile Strength @ Break (PSI) 3,000 4,500 1,500 2,500 2,300 2,500 2,800 2,500
Elongation @ Break 200% 450% 75% 150% 50% 150% 175% 100%
Shore D Hardness 51 54 56 57 65 57 62 57
Dielectric (kV/mil) 3.5 3.7 .8 - - - - -
Upon Request, physical testing with test reports available.


COMMON SPECIFICATIONS FOR Teflon  AND PTFE PRODUCTS

Specifications

*AMS 3651
AMS 3652
AMS 3656
AMS 3658
AMS 3659
AMS 3660
AMS 3661
AMS 3662
AMS 3667
AMS 3668
AMS 3669
AMS 2491
*MIL-P-22241
*MIL-P-19468
ASTM D1710
ASTM D3293
ASTM D3294
ASTM D3308

Type Of Specification for PTFE and Teflon ?/B>

PTFE RODS, TUBES, SHEETS, SHAPES (See AMS 3652 thru AMS 3669)
PTFE FILM
PTFE EXTRUSIONS
PTFE EXTRUSIONS
PTFE EXTRUSIONS
PTFE MOLDINGS
PTFE FILM
PTFE FILM
PTFE SHEET, MOLDED
PTFE MOLDINGS
PTFE SHEET, MOLDED
SURFACE TREATMENT OF PTFE
PTFE SHEET & FILM (See ASTM D3293 & ASTM D3308)
PTFE RODS, MOLDED & EXTRUDED (See ASTM-D1710)
PTFE ROD
PTFE MOLDED SHEET
PTFE MOLDED SHEET OR SHAPES
PTFE SKIVED TAPE

* Note: These specifications have been deleted. See replacement specifications for current information.
Upon Request, physical testing with test reports available.

                    

 
 
 
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