Application Scope:

Suitable for hazardous environments such as oil extraction, refining, chemical, and military industries.
Suitable for Zone 1 and Zone 2 explosive gas environments.
Suitable for Zone 20, Zone 21, and Zone 22 combustible dust environments.
Suitable for explosion classes IIA, IIB, and IIC.
Suitable for sealing enclosures and steel pipes.

Technical Parameters:

Explosion-proof Marking: Ex db IIC Gb, Ex eb IIC Gb, Ex tb IIIC Db.
Protection Level: IP68.
Operating Temperature: -30°C to +120°C.
Product Materials: Nickel-plated brass, 304 stainless steel, 316 stainless steel.
Thread Interfaces: M thread, NPT thread, and G thread.
Compliance Standards: GB3836.1, GB3836.2, GB3836.3, GB12476.1, GB12476.5, IEC60079-0, IEC60079-1, IEC60079-7, IEC61241-0, IEC61241-1, IEC62444, EN62444, EN60079-0, EN60079-1, EN60079-7, EN61241-0, EN61241-1.

The stopping plug is primarily suitable for use in Zone 1, Zone 2, Zone 21, and Zone 22 explosive gas and dust environments. It is used to seal equipment in hazardous areas and is commonly used in industries such as petroleum, chemical, pharmaceutical, and military factories. The explosion-proof parameters of the sealing face of the stopping plug should comply with the provisions of Chapter 5 of GB/T3836.2-2021. The pitch should not be less than 0.75mm and not greater than 3mm. The effective engagement threads should be equal to or greater than 5 threads. The axial engagement length should be equal to or greater than 8mm. The thread accuracy should not be lower than 6g/6H.