Harsh-environment connectors, made in our own factory since 1957
38999-type, subsea, hermetic, high-temperature, high-voltage and Micro-D connectors, designed and built in Shenyang, China. Every series page publishes full specifications, and every series can be customized.
Browse productsRequest a quote
- 23 product families
- 94 series with full specifications
- reply to quote requests1 business day
Explore our 94 connector series
Search a model or browse by connector group.
Featured series
Start with these series, or browse all 94.
38999-Type Circular Connectors
J599 Series III
- Insert arrangements
- 184
- Temperature
- −65 to +200 °C
- Shell sizes
- 9 to 25
Subsea & Underwater Connectors
SHX33
- Depth
- 7000 m
- Pressure rating
- 70 MPa mated and unmated
- Contacts
- 3 to 16
High-Voltage & High-Current Circular Connectors
J599HV
- Current rating
- 80–300 A per contact
- Withstanding voltage
- 3500 V
- Protection
- IP65
High-Temperature Connectors
GRT
- Temperature
- −55 to +500 °C
- Sealing
- Hermetic receptacles
- Shell
- Stainless steel
Explosion-Proof Connectors
FBG
- Ex marking
- Ex db IIC T6 Gb
- Shell
- Stainless steel
- Salt spray
- 500 h
Hermetic Connectors
K
- Sealing
- Leak-tested at 101 kPa
- Contacts
- 3 to 61
- Temperature
- −55 to +125 °C
Liquid Cooling Connectors
LTK-T
- Max. pressure
- 20 bar
- Max. flow
- 2–60 L/min
- Temperature
- −55 to +175 °C
Why engineers work with us
Specifications you can design with
Every series page publishes ratings, ordering codes and insert arrangements — no login, no request needed.
Made in our own factory
Shells, contacts and insulators are machined, molded and plated in-house in Shenyang, where we have built connectors since 1957.
Customized to your equipment
Contact counts, cable lengths, materials and finishes are all configurable; new designs are built to your drawing.
Samples before series production
Configuration and quotation, samples built to order, third-party testing on request, then series production.
Made in-house in Shenyang:
- Machining
- Insulator molding
- Stamping
- Die-casting
- Electroplating
- Assembly
Applications
Rail & Transit
Reverse-bayonet, 38999-type and waterproof connectors for rolling stock, metro and maglev equipment.
Oil, Gas & Hazardous Areas
Explosion-proof, glass-sealed, high-temperature and subsea connectors for wells, platforms and process plants.
Marine, Offshore & Subsea
Underwater connectors to 7000 m, shipboard watertight connectors and marine-grade 38999 types.
Industrial Automation & Robotics
Small, light and high-cycle connectors for robots, drives and machine tools.
Power Electronics & Energy Storage
High-voltage power connectors, liquid-cooling couplings and mixed-power board connectors.
Test & Measurement
High-cycle, zero-insertion-force and high-speed connectors for test systems and fixtures.
Rugged Computing & Communication
VPX backplanes, fiber-optic hybrids, EMI filter connectors and high-speed Micro-D/Nano-D.
Semiconductor & Vacuum Equipment
High-current power feedthroughs and glass-sealed signal connectors for vacuum and pressure vessels.
Engines, Furnaces & High Temperature
Connectors from +260 °C to +500 °C and thermocouple connectors for temperature measurement.
Selection guides
38999 Series I, II, III and IV: What Is the Difference?
Compare coupling, size, vibration performance and uses across the four series.
Subsea Connector Depth and Pressure Ratings Explained
Understand operating depth, mated and unmated pressure, and what to specify.
IP67, IP68 and Hermetic Sealing: What Connector Ratings Mean
Distinguish IP ratings, hermetic sealing and underwater depth ratings.
How to Read a 38999 Part Number
Decode connector type, finish, shell size, insert arrangement, contact type and key position.
Micro-D vs Nano-D Connectors: How to Choose
Compare pitch, current, contact count, mating cycles and variants to choose between Micro-D and Nano-D.
Withstanding Voltage vs Working Voltage in Connectors
Understand test voltage, working voltage and the effect of altitude on connector ratings.
From sample to production
Send your requirement
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 made to your order. 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.
Purchasing FAQs
What information do you need for a quote?
Only your email and a short description are required. If available, include the part number or drawing, quantity and application.
Request a quoteCan you customize a connector or cable assembly?
Contact counts, cable lengths, materials and finishes are configurable. New designs can be built to your drawing.
Explore customizationCan we validate samples before series production?
Samples are built to order for you to test in your equipment before series production. Third-party testing is available on request.
Discuss sample requirementsHow do I request a drawing or datasheet?
To request our drawing or datasheet, select "Please send a drawing / datasheet" in the quote form. To share your own drawings or pin-out files, send them by email after our first reply.
Request a drawingWhat is the lead time?
It depends on the configuration and quantity. Send us your requirement and we will confirm the lead time with the quotation.
Request a quoteIs there a minimum order quantity?
It depends on the series and configuration. Tell us the quantity you need, including sample quantities, and we will confirm it with the quotation.
Request a quoteNeed a quote or a drawing?
Send your part number, pin-out or drawing. An engineer will reply by email within 1 business day.