Zero Length Viewport
| Part No. | O | B | T | V | Glass Thickness | Wt. Lbs |
| VP-075 | 1.33 | 1.06 | 0.28 | 0.63 | 0.07 | 0.5 |
| VP-100 | 2.12 | 1.63 | 0.47 | 0.87 | 0.07 | 0.7 |
| VP-151 | 2.75 | 2.31 | 0.68 | 1.5 | 0.125 | 1 |
| VP-200 | 3.37 | 2.85 | 0.68 | 1.5 | 0.125 | 1 |
| VP-251 | 4.5 | 3.63 | 0.68 | 2.69 | 0.17 | 2.5 |
| VP-300 | 4.62 | 4.03 | 0.75 | 2.69 | 0.17 | 2.5 |
| VP-401 | 6 | 5.13 | 0.78 | 4 | 0.2 | 3 |
| VP-500 | 6.75 | 5.97 | 0.84 | 4 | 0.2 | 3 |
| VP-601 | 8 | 7.12 | 0.87 | 6.13 | 0.375 | 3.5 |
| SPECIFICATIONS | ||||||
| Pressure Range: Below 1*10-11 Torr | ||||||
| Materials | ||||||
| Window : 7056 Glass | ||||||
| Sleeve : Kovar | ||||||
| Flange : Type 304 SST | ||||||
| Bakeout Temperature : 400℃ | ||||||
| Window to Sleeve Construction Matched Expansion | ||||||
| Dimensions in inches | ||||||