Wellsites and drilling
FBG serves oil and gas production and FBZ drilling signal and instrument lines. SHX10 glass-sealed receptacles go on downhole and wellhead instruments.
Connectors for Oil, Gas and Hazardous Areas
Wellsites, refineries, chemical plants and offshore platforms combine explosive atmospheres, corrosive media, pressure and heat.
FBG (Ex db IIC T6 Gb) and FBZ (Ex ec IIC T4 Gc, IP68) connectors serve hazardous areas; SHX10 glass-sealed receptacles stay gas-tight when unmated; GRT connectors run to +500 °C near hot equipment.
At a glance
- Ex db IIC T6 Gb
FBG flameproof marking; FBZ is Ex ec IIC T4 Gc with IP68
- +500 °C
GRT maximum, with models rated 500, 350 or 300 °C
- 10 MPa
SHX10 mated rating; 5 MPa on the glass-sealed receptacle alone
- 7000 m
SHX33 rubber-molded connectors, 70 MPa mated and unmated
Where they are used
Refineries and process plants
FBG and FBZ serve chemical and process plants. GRT connects high-temperature process instruments, and NPT feedthrough studs carry power through pressure-vessel walls.
Offshore platforms and subsea
FBG and FBZ serve offshore platforms, SHX10 gives gas-tight connections on platform equipment, and SHX33 and subsea cable assemblies connect underwater equipment.
What the connectors must handle
Ex protection
FBG is marked Ex db IIC T6 Gb (surface temperature ≤ 85 °C) and FBZ Ex ec IIC T4 Gc (≤ 135 °C). Both hold Ex component certificates to GB 3836, aligned with IEC 60079.
Water, dust and corrosion
FBZ is sealed to IP68, and both FBG and FBZ use stainless-steel shells rated 500 h salt spray.
Sealed when unmated
SHX10 glass-sealed receptacles stay gas-tight and watertight with the plug removed: 5 MPa on the receptacle, 10 MPa mated.
Heat
GRT runs up to +500 °C, with stainless-steel shells and glass-insulated receptacles.
Power through a pressure wall
NPT feedthrough studs carry 105–750 A, withstand 5000 VAC and leak less than 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa.
Subsea depth
SHX33 is rated to 7000 m and 70 MPa mated and unmated; subsea cable assemblies are vulcanized to power, signal, load-bearing, fiber or hybrid cable.
Compare the series
Hazardous-area Ex components
Swipe left or right to see all columns.
| Series | Protection type | Ex marking | Shell | Salt spray | Standards | Datasheet |
|---|---|---|---|---|---|---|
| FBG | Flameproof (d) | Ex db IIC T6 Gb | Stainless steel | 500 h | GB 3836.1 / GB 3836.2 | PDF, 210 KB |
| FBZ | Increased safety (e) | Ex ec IIC T4 Gc | Stainless steel | 500 h | GB 3836.1 / GB 3836.3 | PDF, 217 KB |
Heat, pressure and power connections
Swipe left or right to see all columns.
| Series | Construction or sealing | Current | Temperature | Pressure or leak-test condition | Datasheet |
|---|---|---|---|---|---|
| SHX10 | Stainless steel, glass-sealed receptacle | 5–46 A (sizes 22D to 8) | −40 to +120 °C | 10 MPa mated; 5 MPa receptacle | PDF, 268 KB |
| GRT | Hermetic receptacles | 7.5–13 A | −55 to +500 °C (by model) | ≤ 4.55 × 10⁻³ cm³/s at 0.1 MPa | PDF, 188 KB |
| NPT-sealed studs | NPT thread | 105–750 A | −40 to +130 °C | < 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa | PDF, 163 KB |
How to choose
Match the equipment marking
Give the protection type, gas group, temperature class and equipment protection level. FBG covers Ex db IIC T6 Gb and FBZ Ex ec IIC T4 Gc.
Plan the certification
FBG and FBZ are Ex components for certification with your complete equipment; tell us which scheme your project uses. Mate and unmate them with the circuit de-energized.
Define pressure and sealing
Give operating pressure, immersion depth and whether the receptacle is ever left unmated. For a feedthrough, give the leak rate and pressure differential you need.
Describe heat and load
Give continuous and peak temperature, current and working voltage. GRT is designed to your interface and temperature profile.
Send the termination details
Send the panel or port drawing, cable type, length and pin-out, and we will review your project.
Recommended series
FBG Flameproof Circular Connectors, Ex db IIC T6 Gb
Ex db IIC T6 Gb · flameproof · stainless steel
FBZ Increased-Safety Circular Connectors, Ex ec IIC T4 Gc, IP68
Ex ec IIC T4 Gc · increased safety · IP68
SHX10 Glass-Sealed Watertight Connectors for Oil & Gas and Marine Equipment
Glass-sealed receptacles · 10 MPa mated · 116 insert arrangements
GRT High-Temperature Connectors, up to +500 °C
−55 to +500 °C · stainless steel · hermetic receptacles
SHX33 Deep-Sea Rubber-Molded Underwater Connectors, 7000 m
7000 m rated · 3 to 16 contacts · Gigabit Ethernet version
Subsea Watertight Cable Assemblies
Vulcanized to cable · up to 70 MPa · single, double and multi-ended
NPT-Sealed High-Current Feedthrough Studs, 105 to 750 A
105–750 A · 5000 VAC · leak < 1 × 10⁻⁸ Pa·m³/s
All series can be customized — contact counts, cable lengths, materials and finishes.
Related guides
Explosion-Proof Connectors: Ex d vs Ex e, Gas Groups and T-Classes
How to read an Ex marking such as Ex db IIC T6 Gb, flameproof vs increased-safety connectors, and what to specify for hazardous areas.
Selecting Connectors for High-Temperature Zones
How insulation, contact and shell materials limit connector temperature, and how to choose between 200 °C, 260 °C, 400 °C and 500 °C connectors.
Subsea Connector Depth and Pressure Ratings Explained
How to read underwater connector ratings: operating depth, mated and unmated pressure, how meters convert to MPa, and what to specify for your equipment.
Hermetic Connector Leak Rates Explained
What a hermetic connector leak rate means, how Pa·m³/s converts to mbar·L/s and atm·cc/s, how leak rates are tested and how to specify one.
FAQ
How do FBG and FBZ differ?
FBG is a flameproof (Ex d) connector marked Ex db IIC T6 Gb. FBZ is an increased-safety (Ex e) connector marked Ex ec IIC T4 Gc and sealed to IP68.
Do FBG and FBZ have Ex certificates?
Yes. Both hold Ex component certificates to the Chinese GB 3836 standards, aligned with IEC 60079, for inclusion in the certification of your complete equipment.
Which receptacle stays sealed when unmated?
SHX10. Its glass-sealed stainless-steel receptacle is gas-tight and watertight, rated 5 MPa on its own and 10 MPa mated.
How hot can GRT connectors run?
Up to +500 °C. GRT is built to order, with models rated 500, 350 or 300 °C; send your temperature profile and interface drawing.
What current can a pressure-wall feedthrough carry?
NPT sealed feedthrough studs carry 105–750 A, withstand 5000 VAC and leak less than 1 × 10⁻⁸ Pa·m³/s at 0.1 MPa differential.
From sample to production
Send your requirements
Part number, drawing, pin-out or a short description of your application.
Configuration and quote
Our engineers match the configuration and reply with a drawing and quotation.
Samples
Samples are built to order. The minimum order quantity is 10 pieces, and samples and production orders each take 4–8 weeks. Third-party testing to your specification is available on request.
Your approval
You test the samples in your own equipment and approve them.
Series production
Production follows the approved sample configuration, with machining, molding, plating and assembly in our own Shenyang factory.
Need a quote or a drawing?
Send your part number, pin-out or drawing. Every inquiry is acknowledged by email within 1 business day, and an engineer follows up with a matched configuration, drawing or quotation.