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What is KTseal ?123
  • KTseal , is the brand name for KTseal's perfluoroelastomer product range.
  • Dupont Dow Elastomers, Kalrez R and Greene, Tweed's Chemraz R are also perfluoroelastomers.
History of Perfluoroelastomers
Market Sectors:
Market Sectors:
Market Sectors:
Compression Set:
Compression Set:
Technical Comparison Hysteresis
1.KT8108
2.KT8507
3.FKM
Hysteresis:
1.KT8108
V Rings
1970 DuPont Dow Elastomers develop first perfluoroelastomer
1975
  • Moulders not willing to purchase expensive polymer
  • DuPont Dow Elastomers develop own moulding capability
  • Kalrez becomes commercially available
1986 Greene, Tweed develop Chemraz following lapse of initial patent
History of Perfluoroelastomers
1990
  • Competition accelerates market growth
  • Other companies dabble with no real impact
1995 Bevelop own perfluoroelastomer offering technical and commercial benefits
2000 Dedicated production facility set up in Hsinchu, Taiwan, to offer flexible manufacturing approach.
Market Sectors:
  • CPI
    • Mechanical Seals
    • Pumps
    • Valves
    • Flanges
    • Mixers
    • Pipework
  • Static or limited dynamics (for O-rings)
  • Relatively low pressures (for O-rings)
  • Wide temperature range
  • Severe chemical duty
  • Oilfield
    • Downhole production equipment
    • Logging equipment
    • Chemical injection
  • Static and dynamic
  • Semiconductor
    • Wafer fabrication equipment
    • Chemical delivery systems
    • Pumps, valves, filters etc.
  • Mainly o-rings in non-standard grooves
  • Exotic acids and plasmas
  • High vacuum
  • Low contamination
  • Low outgassing
  • Print, Paint, and Coating Industries
    • Solvents
  • Aerospace
    • High Temperature
    • Rocket Propellants

Available Products

  • O-Rings
  • V-Rings
  • Fabric Reinforced Diaphragm
  • nflatable Seals
  • Bellows
  • Valve Stem Packings
  • Custom Moulded Geometries
  • Bonded Products
“Forsheda produce an elastomeric [KTseal] lipseal (V Ring). This will provide an answer to the “stationary clogging issue” and leverage the KTseal product line. ”
Note that the V Ring will run against the end of the inner gland plate which is hardened and lapped for this purpose.
Diaphragms (Under Development)
KTseal /FKM bonded diaphragms.Alternative to PTFE diaphragms for chemically challenging applicationsoffering:
  • Flexibility of elastomer
  • Chemical resistance of KTseal
  • Physical strength of FKM
  • Extended diaphragm life
  • Full pump performance
  • Reduced down time and maintenance costs

Inflatable Seals

  • PTFE cold flow
  • Particles imbedded into PTFE seal
  • Expensive hardware damaged
  • High levels of maintenance KTseal inflatable seals. Alternative to PTFE for chemically challenging applications offering:
  • Repeated inflations
  • Full retraction after inflation
  • Elimination of hardware damage
  • Reduced down time and maintenance costs

Materials Testing

  • Compression set
  • Hardness
  • Swell and volume change
  • Hysteresis
  • Elongation
  • Tensile strength
  • Tear strength
  • Specific gravity
  • Abrasion resistance

Applications Acids

 Temp.TimeKTsealComp Matl A
Hydrochloric Acid , 37% amb. 70 h + 0.2 + 0.8 (4079)
Hydrofluoric Acid, 60% 104F 168 h + 0.6 3 + 0.5 (4079)
Phosphoric Acid, 85% 248F 70 h - 0.1 - 0.1 (4079)
Sulfuric Acid, 98% 248F 70 h +1.0 3 +4.1 (4079)
Hydrofluoric Acid/HC 115F
Adiptic Acid 212F
Paratoluic Acic 300F
Monochlorocetic Acid 32F
Nitric Acid, 43% 120-140F
Stearic Acid (Octadecandic Acid) 185F
  • Laboratory Test Results (% Volume Swell)
  • Examples of KTaesl Applications