Our Explosion-Proof Stopping Plug safely seals unused threaded entries in hazardous area enclosures. This Ex e certified, IP66 fitting maintains the integrity of your Ex system in Zone 1 & 2 environments.
Key Features

| Metric Thread | Product Number | Locking Range Φ(mm) |
Thread O.D.
AG(mm) |
Overall Length
OL(mm) |
Opposite side
(mm) |
| M16×1.5 | Ex-BDTM16 | 15 | 16 | 19 | 20 |
| M20×1.5 | Ex-BDTM20 | 15 | 20 | 19 | 24 |
| M25×1.5 | Ex-BDTM25 | 15 | 25 | 20 | 30 |
| M32×1.5 | Ex-BDTM32 | 17 | 32 | 22 | 36 |
| M40×1.5 | Ex-BDTM40 | 17 | 40 | 23 | 45 |
| M50×1.5 | Ex-BDTM50 | 20 | 50 | 27 | 55 |
| M60×1.5 | Ex-BDTM60 | 20 | 60 | 27 | 64 |
| M63×1.5 | Ex-BDTM63 | 20 | 63 | 27 | 68 |
| M75×2.0 | Ex-BDTM75 | 22 | 75 | 30 | 80 |
| M88×2.0 | Ex-BDTM88 | 22 | 88 | 31 | 96 |
| M100×2.0 | Ex-BDTM100 | 22 | 100 | 32 | 110 |
| M115×2.0 | Ex-BDTM115 | 22 | 115 | 33 | 125 |
| American Thread | Product Number | Locking Range Φ(mm) |
Thread O.D.
AG(mm) |
Overall Length
OL(mm) |
Opposite side
(mm) |
| NPT1/2 | Ex-BDTNPT1/2 | 15 | 21.22 | 19 | 24 |
| NPT3/4 | Ex-BDTNPT3/4 | 15 | 26.56 | 20 | 30 |
| NPT1 | Ex-BDTNPT1 | 17 | 33.28 | 22 | 36 |
| NPT1-1/4 | Ex-BDTNPT1-1/4 | 17 | 41.98 | 23 | 45 |
| NPT1-1/2 | Ex-BDTNPT1-1/2 | 20 | 48.05 | 27 | 55 |
| NPT2 | Ex-BDTNPT2 | 20 | 60.09 | 27 | 64 |
| NPT2-1/2 | Ex-BDTNPT2-1/2 | 22 | 72.69 | 30 | 80 |
| NPT3 | Ex-BDTNPT3 | 22 | 88.60 | 31 | 96 |
| NPT4 | Ex-BDTNPT4 | 22 | 113.97 | 33 | 125 |
| Inch Thread | Product Number | Locking Range Φ(mm) |
Thread O.D.
AG(mm) |
Overall Length
OL(mm) |
Opposite side
(mm) |
| G1/2 | Ex-BDTG1/2 | 15 | 20.95 | 19 | 24 |
| G3/4 | Ex-BDTG3/4 | 15 | 26.44 | 20 | 30 |
| G1 | Ex-BDTG1 | 17 | 33.25 | 22 | 36 |
| G1-1/4 | Ex-BDTG1-1/4 | 17 | 41.91 | 23 | 45 |
| G1-1/2 | Ex-BDTG1-1/2 | 20 | 47.80 | 27 | 55 |
| G2 | Ex-BDTG2 | 20 | 59.61 | 27 | 64 |
| G2-1/2 | Ex-BDTG2-1/2 | 22 | 75.18 | 30 | 80 |
| G3 | Ex-BDTG3 | 22 | 87.88 | 31 | 96 |
| G4 | Ex-BDTG4 | 22 | 113.03 | 33 | 125 |