BS is a lip seal with a secondary sealing lip and tight fit at the outer diameter. Wear and dry run are largely prevented by the additional lubricant retained under the seal by the secondary lip. 

BS is mainly designed for the sealing of piston rods and plungers in heavy duty applications in mobile and stationary hydraulics. 

Technical Data: 
Pressure: CPU: 400 Bar,
Temperature: -35  to +110
Speed: 0.5m/s 
Media: Hydraulic oils (mineral oil-based) 

Material:
Material: PU 
Hardness: 93 2 Shore A
Color: Turquoise

Advantages:  
Insensibility against shock loads and pressure peaks
High resistance against extrusion
Sufficient lubrication due to pressure medium between the sealing lips
Suitable for hardest working conditions 
Easy installation 
 
BS
ID x OD x H (mm) ID x OD x H (mm) ID x OD x H (mm)
6X12X5 22.4X30X5 36X46X7.3
8X14X6 25X31X8 36X51X10
8X16X5.7 25X32X7 37X47X7.3
8X16X6 25X33X5 37X47X10
9X16X5.7 25X33X6 38X48X6
10X16X4.5 25X35X6 40X48X8
10X17X5.7 25X35X7 40X50X6
10X18X5.7 25X35X7.3 40X50X7
10X18X6 25X35X8 40X50X7.3
10X18X8 25X45X10 40X50X8
10X20X5 25.4X31.75X6.3 40X50X10
10X20X6 26X36X10 40X52X8
11.2X19.2X5 28X34X8 40X55X10
12X18X6 28X35.5X5 40X55X11.4
12X20X5 28X35.5X5.7 43X53X7.3
12X20X6 28X36X5.7 45X53X5.6
12.5X22.5X8 28X36X6 45X53X10
14X20X5.7 28X36X7 45X55X6
14X22X5 28X36X10 45X55X7
14X22X5.7 28X38X7.3 45X53X5.6
14X24X7.3 28X43X10 45X55X7.3
14X24X8 30X37X6 45X55X8
15X25X8 30X38X6 45X55X10
16X22X5 30X40X6 45X56X7
16X24X5 30X40X7 45X60X9
18X24X5 30X40X10 45X60X10
18X24X8 31.75X41.28X6.35 45X60X11.4
18X25X5 30X45X10 46X56X10
18X26X5 32X42X6 48X56X11.5
18X28X8 32X42X7 50X60X6
19X28X7 32X42X7.3 50X60X7
20X26X5 32X42X10 50X60X7.3
20X28X5 32X45X10 50X60X10
20X28.3X5 32X47X10 50X63X6
20X30X6 34X45X6 50X63X8
20X30X7.3 35X43X7 50X65X9
20X30X8 35X45X6 50X65X10
22X28X6 35X45X7 50X65X11.4
22X30X5 35X45X7.3 52X62X10
22X30X5.7 35X45X7.5 53X63X6
22X32X7.3 35X45X10 55X65X6
22X32X8 35X50X10 55X65X10
ID x OD x H (mm) ID x OD x H (mm) ID x OD x H (mm)
55X65X12 75X85X7 100X115X9
55X67X10 75X85X11.5 100X115X10
55X68X10 70X83X10 100X115X12
55X70X11.4 70X85X11.4 100X120X12
55X70X12 70X85X12.5 100X120X14.5
56X71X11.4 75X88X10 100X130X15
60X68X13 75X90X9 105X113X11.5
60X70X6 75X90X9.5 105X120X9
60X70X7.5 75X90X10 105X120X10
60X70X10 75X90X12 105X125X12
60X71X7 75X95X9 105X125X15
60X73X10 75X95X12 105X125X16
60X75X9 78X86X11.5 107X115X11.5
60X75X10 80X90X6 110X118X10.5
60X75X11.4 80X90X12 110X125X9
60X75X13 80X93X10 110X125X9.6
60X80X12 80X95X9 110X125X12
63X71X8 80X95X10 110X125X14.5
63X73X6 80X95X11.4 110X130X10
63X73X11.8 80X95X12 110X130X12
63X73X12 80X100X12 110X130X14.5
63X73X13 85X93X11.5 112X125X9
63X75X11.4 85X95X9 115X130X9
63X78X10 85X100X9 115X130X10
63X78X11.4 85X100X10 115X130X12
64X72X9.1 85X100X12 115X135X12
65X73X11.5 85X105X12 115X135X16
65X75X6 90X98X11.5 118X126X13
65X75X7 90X100X8 120X130X11.4
65X75X12 91X100X10.5 120X130X12
65X78X10 90X105X9 120X130X14
65X80X9 90X105X10 120X130X17
65X85X11.4 90X105X10.5 120X135X9
68X78X12 90X105X11.4 120X135X14.5
70X78X8 92X107X11.4 120X140X12
70X80X6* 95X105X11.4 120X140X15
70X80X7 95X110X9 125X133X11.5
70X80X10 95X110X10 125X135X9
70X80X11.4 95X115X12 125X135X11.4
70X80X12 97X105X13 125X145X12
70X85X9 100X108X12 125X145X15
70X85X10 100X110X9 130X145X9
70X85X12.5 100X110X11.4 130X145X12
75X85X6 100X115X8 130X150X15
ID x OD x H (mm)
135X143X10.5
140X155X9.6
140X160X12
140X160X14.5
143X153X12
145X155X11.4
150X160X9
150X160X11.4
150X165X9
150X165X12
150X170X15
160X170X10.5
160X180X12
160X180X18.5
160X185X18.2
164X174X12
167X175X11.5
170X200X18
171X179X13
175X185X11.4
176X186X12
177.7X198X9.73
180X188X11.5
180X190X9
180X190X11.4
180X200X12
180X200X15
185X195X13
190X210X12
190X210X16
193X201X11.5
200X211X12
200X220X12
200X220X18.2
200X225X18.2
210X230X12
210X235X18
210X240X19
220X245X16
220X240X16
280X310X18
300X330X18