Packings

Packings made of aramid fiber yarn can be used up to 200 ͦ C. The chemical resistance of these yarns is rather low. Packings made of PTFE fibers have significantly better chemical resistance. They can be used at temperatures up to 250 ͦ C. At temperatures above 250 ͦ C, packings made of carbon and graphite yarns are mainly used as fitting packings in high-temperature applications.

Universal packings

Material	Temp. (°C)		pH	Rotating shaft		Oscillating shaft		Spindle sealing
	min	max		Pressure bar	Pressure m/s	Pressure bar	Pressure m/s	Pressure bar	Pressure m/s
Aramide yarn	-100	280	2 – 13	25	25 – 30	100	2	100	2
Aramide staple fibre yarn	-100	280	2 – 13	20	20	100	2	100	2
Aramid/PTFE combination	-100	280	2 – 13	bis 20	bis 25	500 – 1400	2	300 – 500	2
Polyamid yarn	-100	260	0 – 12	20	20	200	2	250	2

High-temperature packings

Material	Temp. (°C)		pH	Rotating shaf		Oscillating shaft		Spindle sealing
	min	max		Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s
Carbon yarn	-60	350	0 – 14	–	–	–	–	150	2
Graphite yarn	bis -200	bis 500	0 – 14	20 – 30	20	–	–	30 – 200	3
PBI yarn	-50	350	0 – 13	bis 20	bis 15	–	–	200 – 250	2

Packings for aggressive media

Material	Temp.(°C)		pH	Rotating shaft		Oscillating shaft		Spindle sealing
	min	max		Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s
PTFE/Graphit yarn	-200	280	0 – 14	20	20	300	2	300	2
PTFE/Graphit yarn (GF0)	-200	280	0 – 14	20	20	500	2	300	2
PTFE/Graphit yarn(G4)	-200	280	0 – 14	–	–	1400	2	500	2
PTFE yarn	-200	280	0 – 14	bis 10	bis 12	150 – 1000	2	150 – 500	2

Packings for low requirements

Material	Temp. (°C)		pH	Rotating shaft		Oscillating shaft		Spindle sealing
	min	max		Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s	Pressure  bar	Equivelocity m/s
Polyacryl yarn	-50	140	1 – 13	10	25	50	2	30	2
Ramie yarn	bis -50	140	5 – 14	20	15 – 20	200 – 900	2	200	2
Cotton yarn	-20	120	5 – 13	15 – 20	10 – 12	100	2	100	2