Nylon cable glands seal cable entry points into enclosures, switchboards, junction boxes and equipment housings — keeping dust and water out where a cable passes through a panel wall. The compression nut clamps down around the cable sheath as it's tightened, forming a sealed, re-openable fitting rather than a one-shot grommet. Straight-through nylon PA66 body, IP68 rated, available in Metric, PG, G(PF) and NPT thread types. Handles automotive, marine, 4WD and general industrial installations — from 12V/24V wiring enclosures to workshop switchboards. Size guide Pick the thread size by your cable's outer diameter, not by eye — the compression seal only works within its rated range. Too small and the cable won't feed through; too large and the nut can't compress enough to seal. Thread Size SKU Cable Diameter Range M12 CG12 3–6.5mm M16 CG16 5–10mm M20 CG20 10–14mm M25 CG25 13–18mm Between sizes? Measure the cable's outer diameter (not the conductor count or gauge) and pick the range it falls inside — the size above the top of a range needs the next gland up.