SKF sealing lip materials
| Composition of basic material | Designation according to | ||
| SKF | ISO 1629 | ASTM1) D1418 | |
| ISO 1043-1 | ASTM D1600 | ||
| DIN 7728 Part1 | |||
| Acrylonitrile-butadiene rubber (nitrile rubber) | R, RG | NBR | NBR |
| Hydrogenated acrylonitrile-butadiene rubber (SKF Duratemp) | H | HNBR | HNBR |
| Carboxylated nitrile rubber (SKF Duralip) | D | XNBR | XNBR |
| Polyacrylate elastomer | P | ACM | ACM |
| Silicone rubber | S | MVQ | VMQ |
| Fluoro rubber (SKF Duralife2)) | V | FPM | FKM |
| Polytetrafluoroethylene | T | PTFE | PTFE |
| Leather | L | - | - |
| Felt | F | - | - |
- 1) American Society for Testing and Materials
- 2) Previously named LongLife
