Ex-e PG 21 Nylon 6/6 (Polyamid-AL) Anodized Aluminum High Preformance Clamp Cable Gland | Cord Grip | Strain Relief CD21AA-CP


Anodized Aluminum Clamp Fitting PG 21

Thread Range: PG 21

Locking Nut & O-ring Sold Separately

Sealcon # CD21AA-CP
Type .51" - .71" (13 - 18 mm)
Color Black
Hummel # 1.215.2101.14
Hummel HSK-K-MZ-Ex
Material Polyamid-AL

Hole Diameter (A)
1.12" (28.4 mm)
Body Length (B)
1.61" (41 mm)
Thread Length (D)
.43" (11 mm)
Wrench Flat (F1/F)
1.3" (33 mm)

Suggested Clearance Hole for Non-Threaded Mounting


  • Liquid Tight - Submersible to 300 ft. - Type Nema 4x & 6 (IP68 / IP 69 K)
  • Highest Pressure Rating - Patented form seal guarantees 150 psig (10 bar)
  • Flame protected - V0 Rated according to UL 94Halogen- and Phosphorous free materials
  • Safety - Ratchet to prevent Dome from coming loose under vibration
  • Large Selection - Cable Range from .08" (2mm) to 1.38" (35mm)
  • Non-Corrosive - Resistant to salt water, weak acids, weak alkalis, alcohol, esters, ketones, ether, gasoline, mineral, animal & vegetable oil.
  • Durable - Rugged Construction
  • Environmentally compliant - RoHS & Deca BDE

This Nylon Strain Relief (Cable Gland) with PG 21 Thread will provide your application with a product made of exceptional quality.

Modularity: The Strain Relief allows you to increase and decrease the cable opening by just swapping out the standard and reduced inserts.

The self locking ACME thread on the dome and flex top ensures that the overlapping splines apply a concentric seal, thereby preventing the form seal from being pulled out of the fitting & ensuring pull-out protection of your cable without damaging it.

Kinking and chafing of the cable is eliminated with use of the Flex Nut.

Technical Data

Pressure Rating

150 PSIG (10 BAR) Type Nema 4x & 6 (Submersible) - IP 68 / IP 69 K


  • Fittings: Nylon 6/6 with Anodized Alumin
  • Form Seal: Buna-N
  • Optional O-Ring: Buna-N, FPM or Silicone
  • Optional Seal Ring: Polyethylene or Fiber-Reinforced Plastic

Operating Temperature

-20°C to 70°C (-4°F to 158°F)

Available Colors

  • Black (RAL 9005)

Nylon 6/6: V0-rated - Flame resistant, halogen and phosphorous free, self-extinguishing, non-toxic, fungus resistant.


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