Deutsch HDP20 series?  If replacing, I prefer the metal shell version HD30 series instead.  

https://www.te.com/content/dam/te-com/documents/industrial-and-commercial-transportation/global/ict-hd30-hdp20-cat-a4-en.pdf


HDP20 Series:

• HDP24-18-6PN: https://www.te.com/usa-en/product-HDP24-18-6PN.html
• HDP26-18-6SN: https://www.te.com/usa-en/product-HDP26-18-6SN.html
• Dust Cap: HDC26-18
• Mounting: 2414-002-1886, 2411-002-1805