Information
Pioneer Weston Rotary Elastomer Seals - Imperial (English)
Part Number Format
†Dimension rounded down to 2 decimal places then multiplied by 100
Standard Rotary Lip Seal Elastomeric Compound Reference
| Polymer Type | Compound Reference | Colour> | Hardness (IRHD) | Temperature Range | Select for.. | Material Designator |
|---|---|---|---|---|---|---|
| Nitrile Rubber (NBR) | N-170-194 | Black | 70 | -35 to +110oC | General Purpose | BLANK |
| Fluorocarbon (FKM, A-Type) | V-75-27 | Black | 75 | -20 to +200oC | High temperature performance, high speed applications | F1 |
| V-85-195 | Black | 85 | F2 | |||
| V-75-50 | Brown | 75 | F3 | |||
| Silicone (VMQ) | S-80-78 | Red | 80 | -55 to +230oC | High and very low temperature; high eccentricity | S1 |
| Polyacrylate (ACM) | A-70-196 | Black | 70 | -30 to +175oC | High and low temperature capabilities; good compatibility with engine oils | A1 |
| Hydrogenated Nitrile (HNBR) | H-80-40 | Black | 80 | -40 to +180oC | Abrasion resistance; high temperatures | H1 |
Other materials are available on request
Special Feature Designator
| Feature | Function | Selection | Designator |
|---|---|---|---|
| Ribbed outer diameter | Helps to reduce press in force and improves static sealing on outer diameter. This function is primarily used for aftermarket requirements and is available only on seals with elastomeric outer diameters | - | 50 |
| Hydrodynamic aid | Helps as a pumping aid to improve functionality of the seal by transferring fluid away from the lip at high speeds to give a positive impact on the life of the seal | Clockwise
Anti-clockwise Bi directional |
C
A B |
| Stainless steel spring | Rust and acid resistant spring | - | 29 |
| Sealant paint | Only available on metal cased seals, this sealant paint helps to seal against any housing imperfections | RED BLUE |
2 3 |
If multiple special features are required, these should be expressed using multiple suffixes separated by a "/" sequenced as per the above table.
Example below:
An imperial sized HNBR R23 with an anti-clockwise hydrodynamic aid and stainless steel spring, would be as follows: W30020037R23-H1/A/29