Image HT-Series Flushface Coupler Dust Plug Markets Construction, Energy / Oil & Gas Jump to Section Product Options Related Products Product Options Part Number Body Size Material 2HTDP 1/4" Nitrile 3HTDP 3/8" Nitrile 4HTDP 1/2" Nitrile 5HTDP 5/8" Nitrile 6HTDP 3/4" Nitrile 8HTDP 1" Nitrile Related Products Image HT-Series Flushface Bulkhead Kit Image HT-Series Flushface Female Threaded Coupler Image HT-Series ISO16028 Flushface Male Threaded Coupler Image HT-Series ISO 16028 Flushface Male Threaded Plug Image HT-Series Flushface Plug Dust Cap Image HT-Series Flushface Seal Kit