• IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female
  • IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female

IL25F Underwater Connector circular series In-Line Connector 25 Pin Contact Female

IL25F 25-contact SubConn Compatible circular subsea in-line connector, female (sockets), 600 V DC/AC, 3 x 10 A power + 22 x 5 A signal contacts, 7,000 m depth rating, wet-mateable, mates with BH25M / IL25M.
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IL25F Circular Series In-Line Connector — Overview

The IL25F is a 25-contact Circular series subsea in-line connector, female (sockets) face, wet-mateable and rated 10 A power / 5 A signal per contact at 7,000 m operational depth. It is factory moulded on a 2 ft (60 cm) chloroprene cable and couples through the characteristic locking sleeve, so the same part serves harness splices and hull penetrations.

25 Contacts 600 V AC/DC 10 A Power / 5 A Signal 7,000 m Depth 500+ Wet Matings SubConn Compatible

Key Design Features

  • Wet-mateable: mate and demate in seawater; each contact carries its own moulded seal, so a single seal failure does not flood the connector.
  • SubConn Compatible: the same face geometry, contact pitch and 3/4-16 UNF-2A thread, so it retrofits existing panels and harnesses without re-machining.
  • Mixed contact set: three 10 A power contacts in gold-plated brass plus twenty-two 5 A signal contacts in gold-plated beryllium copper.
  • 10 A power / 5 A signal per contact: rated current with a 60 A connector limit for the 25-contact shell.
  • Pressure qualified: 1,400 bar mated design depth, 800 bar open face; a PEEK shell extends service to 300 bar where weight matters.
  • Field serviceable: locking sleeves, O-rings and snap rings are replaceable; lead, thread and cable lengths can be specified to order.

Technical Specifications

ParameterSpecification
ModelIL25F
Contact count25 contacts
GenderFemale (sockets)
MountingIn-Line (cable-to-cable)
Rated current10 A power / 5 A signal per contact (max 60 A per connector)
Rated voltage600 V DC/AC rms
Contact resistance< 0.01 Ω
Insulation resistance> 200 MΩ
Wet mating cycles> 500 (open face rated)
Operating temperature (water)-4 °C to +60 °C (+25 to +140 °F)
Operating temperature (air)-40 °C to +60 °C (-40 to +140 °F)
Storage temperature-40 °C to +60 °C (-40 to +140 °F)
Design depth (mated)1,400 bar / 20,300 psi
Pressure test (open face)800 bar / 11,600 psi
Depth rating with PEEK shell300 bar / 4,350 psi
Operational depth rating7,000 m (700 bar / 10,000 psi)
Mounting thread3/4-16 UNF-2A
Hex flats1-3/8 in (34.9 mm)

Materials

ParameterSpecification
Connector bodyChloroprene rubber (neoprene)
ShellBrass, 316L stainless steel, titanium, anodised aluminium or PEEK (options)
ContactsContacts 2, 4 and 6: gold-plated brass UNS-C36000; contacts 1, 3, 5 and 7-25: gold-plated beryllium copper
Location pinStainless steel AISI 303
O-ringsNitrile rubber
Locking sleevePOM or stainless steel
Snap ringsStainless steel AISI 302

Moulded Cable & Termination

ParameterSpecification
Moulded cable2 ft (60 cm) chloroprene rubber cable, factory moulded; 16 ft (5 m) on request
Cable3 x 18 AWG (0.82 mm²) + 22 x 20 AWG (0.52 mm²), polyurethane
Nominal cable O.D.Sized to cable type
Wire colour code1 Orange, 2 Black (18 AWG), 3 Grey, 4 Red (18 AWG), 5 Green, 6 Brown (18 AWG), 7 Yellow, 8 White/Black, 9 White, 10 Purple, 11 Blue, 12 White/Yellow, 13 White/Green, 14 White/Blue, 15 White/Purple, 16 White/Grey, 17 White/Brown/Black, 18 White/Red/Black, 19 White/Orange/Black, 20 White/Yellow/Black, 21 White/Green/Black, 22 White/Blue/Black, 23 White/Brown, 24 White/Red, 25 White/Orange

Mating & Compatibility

ParameterSpecification
Mates withBH25M / IL25M
Dummy connectorDC25M
InterchangeabilitySubConn Compatible — BH / IL / DC series; also interchangeable with SeaCon and Burton standard circular equivalents

Typical Applications

Maximum-density interfaces, sonar and hydrophone arrays, seabed observatory nodes.

Notes for Selection

The 25-contact layout splits into 3 power contacts at 10 A and 22 signal contacts at 5 A, with a 60 A connector limit; contacts 2, 4 and 6 are gold-plated brass, the rest gold-plated beryllium copper.

Custom configurations available Shell material, thread and lead/cable lengths, pin-out and certified hydrostatic testing can be specified to order. Send us your drawing or mating requirement for a quotation.