E1WFK2/25/M25 M25 Cable Gland With Locknut, Brass. From Peppers, a range of IP66 ATEX approved flameproof cable glands designed for use with SWA electrical cable. The E type double compression glands are certified Flameproof Ex d, Increased Safety EX e, and Restricted Breathing Ex nR and are suitable for use in Zone 1, Zone 2, Zone 21 and Zone 22. The E type glands are also suitable for Gas Groups IIA, IIB, and IIC areas.