Oil seal OS-A13
OS-A13
Description
- Elastomer-coated OD, flat
- Non-spring-loaded sealing lip
- Protective lip against entry of contamination from outside (dust, dirt,...) ribbed OD available on request, type OS-G13
Special features
- Non-spring-loaded lip design, for secondary sealing jobs e.g., grease sealing
- Low friction
- Compact design
- Little installation space
- Reliable static sealing inside housing
- For housings with high thermal expansion, e.g., light metal housing
- For split housings
- For housings with increased surface roughness
- No risk of fretting corrosion
- Efficient protection against air side contaminations
Applications e.g.:
- Secondary sealing jobs
- Mechanical and apparatus engineering
- Drive systems
- Electric motors
Materials
Standard material
| Elastomer | NBR 70 black |
| Metal case | Carbon steel according to DIN EN 10139 |
Special materials
| Elastomer | FKM |
| Silicon | |
| ACM | |
| HNBR | |
| CR | |
| EPDM | |
| Metal case | Stainless steel 1.4301 |
Application parameters
For the standard materials combination:
| Temperature | -40°C to +100°C |
| Pressure | depressurized |
| Shaft speed | max. 6 m/s, and acc. to chart „Operating parameters for rotary shaft seals“ |
| Media | Mineral oil based lubricants, synthetic lubricants |
When synthetic lubricants are used for which there is no empirical experience, test the compatibility in the laboratory or - better even - in practical trials. The operating temperature should not exceed 80°C.
Design information
Shaft
| Tolerance | ISO h11 |
| Hardness | min. 45 HRC |
| Roughness | Ra = 0,2 - 0,8 μm |
| Rz | 1-5 μm |
| Rmax | ≤ 6,3 μm |
| Surface finish | free of orientation (lead free) |
Housing bore
| Tolerance | ISO H8 |
| Roughness | Ra = 1,6 - 6,3 μm |
| Rz | = 10 - 20 μm |
| Rmax | ≤ 25 μm |
Installation
Please read our installation instructions.
