b27158184 - ISO500 inlet trapped O-Ring nitrile

ISO500 inlet trapped O-Ring nitrile

B27158184

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Overview

Nitrile ‘O’ rings

Our nitrile (VOR) ‘O’ rings are manufactured from butadiene/acrylonitrile. Commonly referred to as nitrile rubber.


Fluoroelastomer ‘O’ rings

Our fluoroelastomer (VIT) ‘O’ rings are manufactured from a copolymer of vinylidene fluoride and hexafluoro-propylene. Fluoroelastomer ‘O’ rings should be used in systems operated below 10-6 mbar.

Fluoroelastomer ‘O’ rings take up a set as their operating temperature increases, but this does not affect their sealing properties in vacuum applications.  A fluoroelastomer ‘O’ ring will restore to its normal shape after uncompressed exposure to atmosphere:  accelerate this process by heating to 150 °C in air. The baking temperature of fluoroelastomer need not exceed 150 °C, since a higher temperature will not, after cooling; further reduce the outgassing rate of the fluoroelastomer.

For convenience, we give fluoroelastomer ‘O’ rings the same size reference figure group as corresponding nitrile ‘O’ rings, but although the two materials are moulded to the same nominal sizes, fluoroelastomer ‘O’ rings have wider tolerances than those specified in BS1806.

Applications

Nitrile ‘O’ rings

    Low outgassing rate
    Good deformation resistance (very resistant to set after compression)
    High resistance to most oils.

Fluoroelastomer ‘O’ rings

    Very low outgassing rate (especially after baking)
    Chemical stability at high temperatures up to 200 °C
    High resistance to oils and many chemicals.

b27158184 - ISO500 inlet trapped O-Ring nitrile

ISO500 inlet trapped O-Ring nitrile

B27158184
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing

Features and Benefits

  • Nitrile ‘O’ rings Our nitrile (VOR) ‘O’ rings are manufactured from butadiene/acrylonitrile.
  • Commonly referred to as nitrile rubber, its most useful characteristics for vacuum use are:
    • ­Low outgassing rate
    • ­Good deformation resistance (very resistant to set after compression)
    • ­High resistance to most oils.

Technical Data

Physical data  
Operating pressure range (absolute)  
C clamp and centring ring 10-7 mbar - 1 bar
Stainless steel clamping ring and Co-seal 10-7 mbar - 17 bar
Stainless steel clamp and metal seal     10-8 mbar - 3 bar
Stainless steel clamp and Co-seal (all sizes) 10-7 mbar - 17 bar
Polymer and aluminium clamps and Co-seal  
   NW10 to NW25 10-7 mbar - 17 bar
   NW40 to NW50 10-7 mbar - 10 bar
NW trapped ‘O’ ring 10-7 mbar - 10 bar
‘O’ ring and centring ring (vacuum use only) 10-7 mbar - 1 bar
Bellows 10-7 mbar - 1 bar
Flexible pipelines 10-7 mbar - 2 bar
Braided flexible pipelines* 10-7 mbar - 10 bar
*  Depends on size  
Operating temperature  
Polymer Co-seal -10 to 80 ºC
Aluminium Co-seal and nitrile seal -10 to 100 ºC
Aluminium Co-seal and fluoroelastomer seal -10 to 200 ºC
Polymer centring ring and nitrile ‘O’ ring -10 to 100 ºC
Polymer centring ring and fluoroelastomer seal -10 to 125 ºC
Nitrile ‘O’ ring -10 to 100 ºC
Fluoroelastomer ‘O’ ring -10 to 200 ºC
Polymer clamp  
    Constant vacuum use -10 to 100 ºC
    Intermittent vacuum use -10 to 125 ºC
Stainless steel clamping ring -10 to 125 ºC
Aluminium clamping ring -10 to 200 ºC
Stainless steel clamp -10 to 200 ºC
   
Standards compliance  
NW and ISO fittings Pneurop 6606 (1981),
                                ISO1609 (1986)
                                DIN28403, DIN28404
CF fittings ISO3669
Stainless steel equivalents  

AISI number German steel number DIN standard
304 1.4301 X5 CrNi 18 10
303 1.4305 X10 CrNi 5 18 9
304L 1.4306 X2 CrNi 19 10
301 1.4310 X12 CrNi 17 7
316 1.4401 X5 CrNiMo 18 10
316L 1.4404 X2 CrNiMo 17 13 2
316Ti 1.4571 X6 CrNiMoTi 17 12 2
321 1.4541 X10 CrNiTi 18 9


Trapped 'O' Ring – see Dimensional drawing

    A B C D
Stainless steel AISI 316L centering ring with aluminum outer ring
Nitrile        
ISO40 63 41 3.9 8
ISO63 95 70 3.9 8
ISO80 109 83 3.9 8
ISO100 128 102 3.9 8
ISO160 179 153 3.9 8
ISO200 239 213  

Dimensions