ISO160 backing Co-Seal nitrile

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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.

• Polymer/Nitrile
• Polymer/Fluoroelastomer
• Aluminium/ Nitrile
• Aluminium/Fluoroelastomer

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

Co-Seal – see Dimensional drawing

		A		B	C
Nylon, nitrile
ISO40			101		80			4.2
ISO63			116		110			4.2
ISO100			151		145			4.2
ISO160			200		190			5.7
Fluoroelastomer
ISO40			101		80			4.2
ISO63			116		110			4.2
ISO100			151		145			4.2
ISO160			2