BEI encoder connector MS Series

MS3106 Mating Connectors for Incremental Encoders
These have sealed conductors and are screw-on, military-style connectors with solder cups on the back of the pins  can accept up to 16 gage wire) and a built-in clamping strain relief. The environmentally sealed backshell is  waterproof.

MS3116 Mating Connector for 12 Bit Absolute Encoders
These have sealed conductors and use a bayonet (push and turn) shell. Pins have solder cups on the back for 20 gage wire and a built-in clamping strain relief. The environmentally sealed backshell is waterproof.