h02106121 - O-RING FKM GP 1121 Pk 2

O-RING FKM GP 1121 Pk 2

H02106121

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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.

h02106121 - O-RING FKM GP 1121 Pk 2

O-RING FKM GP 1121 Pk 2

H02106121
Downloading pricing...
List Price:
Web Price:
Please contact customer care for pricing

Features and Benefits

The most useful characteristics of Nitrile 'O' rings for vacuum use are:
  • Low outgassing rate
  • Good deformation resistance (very resistant to set after compression)
  • High resistance to most oils.
Fluoroelastomer offers:
  • Very low outgassing rate (especially after baking)
  • Chemical stability at high temperatures up to 200 °C
  • High resistance to oils and many chemicals.

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

'O' Ring (pack of 10) sizes – see Dimensional drawing
 
Chemical Resistance
 
This information is provided as a general guide only. Further guidance should be sought with respect to specific chemicals and their applications.
 
MATERIAL GENERALLY RESISTANT TO GENERALLY ATTACKED BY
NITRILE
Butadiene Acrylonitrile copolymer Many hydrocarbons fats, oils greases, hydraulic fluids Ozone, ketones, esters, aldehydes, chlorinated and nitro hydrocarbons
NEOPRENE
Chloroprene polymer Moderate chemicals and acids, ozone, oily fats, greases, many oils and solvents Strong oxidizing acids and esters, ketones, chlori-nated aromatic and nitro hydrocarbons
FLUORO- ELASTOMER
Fluorocarbon polymer All aliphatic, aromatic and halogenated hydrocarbons, acids, animal and vegetable fats Ketones, low molecular weight esters and nitro containing compounds
ALUMINUM
Organic acids, fatty acids, freons, nitric acid Strong acids, alkalis chlorinated solvents, mercury
STAINLESS STEEL
Organic acids, alkalis, nitric acid. Sulphuric acid (10%) Oxidizing chlorines, some organic acids, hydrochloric acid, hydrofluoric acid
POLYMER
Liquid crystal polymer Organic acids, glycols, chlorinated solvents, ketones, mineral and oxidising acids, caustic solutions freons Sodium hydroxide, sulphuric acid (70%)

Dimensions