Industrial shaft seals

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shaftАБ seals
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Table 5. Chemical and thermal resistance, radial shaft seals lip materials
Medium to be sealed
Permissible operating temperatures (continuous)
for SKF radial shaft seal lip materials 1)
– °C
R P S 2) V
(NBR) (ACM) (MVQ) (FPM)
Mineral oil based lubricants
Motor oils 100 130 150 170
Gear oils 80 120 130 150
Hypoid gear oils 80 120 n 150
Automatic transmission fluids (ATF oils) 100 130 N 170
Greases 90 N N N
Hydraulic fluids 90 120 N 150
Fire resistant hydraulic fluids
Oil in water emulsions and aqueous 70 n 60 N
polymer solutions
Anhydrous fluids n n n 150
Other media
Fuel oils EL and L 90 N n N
Water 90 n n 100
Alkaline washing solutions 90 n n 1.100
Permissible temperature range
for seal lip min: – 30 – 40 – 60 – 40
max: +100 +150 +160 +200
1) R = nitrile rubber
P = polyacrylate elastomer
S = silicone rubber
V = fluoro rubber
2) Silicone rubber seals can only be used when oxygen can reach the sealing position
n Lip material not resistant
N Lip material not resistant to some media in this group
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