Model: B2 (DIN3760 B type)
Material: Simrit 72 NBR 902

1 Features
Cylindrical: metal skeleton
Metal plug-ins: a spring-loaded sealing lip
2 Materials

Simrit 72 NBR 902:
Simrit72 NBR902: nitrile rubber with a hardness of 72 Shore A
Metal cylindrical and plug-ins: DIN1624 low-carbon steel
Spring: 17223 spring steel
3 operating conditions

Medium: mineral oils, synthetic oils, greases and
T: -40 ℃ ~ +100 ℃, short-term up to +120 ° C
v: see catalog page 4 Figure
p: to 0.05MPa (0.5 bar), the maximum permissible value and other operating conditions.

4 Benefits

Widely used in various fields of industry standard model seals
Suitable for large-scale equipment and coarse press fit mounting cavity bore, the cylindrical sealing low viscosity and gases.
Cavity and machining standard

Axis: Tolerance: ISO h 11
    Concentricity: IT 8
    Roughness R a = 0,2 - 0,8 m
        R z = 1,0 - 5,0 μm
        R max = <6,3 μm
    Hardness: 45-60 HRC
    Finish: non oriented, preferably by plunge grinding
Cavity: Tolerance: ISO H8
    Roughness: R z = 6,3 - 16 μm

6 Install
Required by DIN3760, careful installation is a prerequisite to ensure good seals

Shaft ¢ D1 size range
B2U: 10mm ~ 290mm
B2USL: 35mm ~ 180mm
B2: 12mm ~ 710mm
B2USL: 25mm ~ 185mm