| Heavy Duty / Transmission | |||||||||
| FDA | Minimum | Working | Temp | Top | Bottom | Belt | |||
| Approved | Gauge | Pulley | Strength | Range | Color | Surface | Surface | Compound | |
| HEAVY DUTY | |||||||||
| # 400 Heavy Duty | No | .165 | 3" | 140 | -20/250 | Brown | Friction | Friction | Neoprene |
| # 500 Heavy Duty | No | .174 | 3.5" | 190 | -20/250 | Brown | Friction | Friction | Neoprene |
| # 600 Heavy Duty | No | .230 | 5" | 270 | -20/250 | Brown | Friction | Friction | Neoprene |
| # 800 Heavy Duty | No | .375 | 7.5" | 160 | -20/250 | Black | Friction | Friction | Neoprene |
| SUPERFLEX | |||||||||
| 3 Ply Superflex | No | .094 | 2.5" | 77 | -20/250 | Brown | Friction | Friction | Neoprene |
| 4 Ply Superflex | No | .156 | 3.5" | 130 | -20/250 | Brown | Friction | Friction | Neoprene |
| 6 Ply Superflex | No | .188 | 4.5" | 170 | -20/250 | Brown | Friction | Friction | Neoprene |