3/4" NPT Nickel Plated Brass Reduced Flex Cable Gland | Cord Grip | Strain Relief CF21NR-BR


Nickel Plated Brass 3/4" NPT Flexible Strain Relief Fitting

Thread Type: 3/4" NPT

Locking Nut Sold Separately. Cable gland with flexible bend protection made of nickel plated brass.

Sealcon # CF21NR-BR
Cable Range .35" - .63" (9 - 16 mm)
Color Nickel
Hummel # 1.623.3400.71
Hummel HSK-M-Flex
Material Nickel Plated Brass

Hole Diameter (A)
1.05" (26.7 mm)
Body Length (C)
4.37" (111 mm)
Thread Length (D)
.51" (13 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 94
  • Halogen- and Phosphorous free materials
  • 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 Nickel Plated Brass Strain Relief with 3/4" NPT 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.

Technical Data

Pressure Rating

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


  • Fittings: Nickel Plated Brass
  • Form Seal: Buna-N
  • Optional O-Ring: Buna-N, FKM or Silicone
  • Optional Seal Ring: Polyethylene or Fiber-Reinforced Plastic


IP 68 – 10 bar / IP 69K within the specific clamping range

Operating Temperature

-40°C to 100°C (-40°F to 212°F)

Nylon 6/6: V0-rated - Flame resistant, halogen and phosphorous free, self-extinguishing, non-toxic, fungus resistant. UL F1 UV Stable Rating for outdoor applications (Black Nylon Version Only)

*Sizes 3/8" NPT, M12, M16, PG7, PG9, and PG11 and all Multi-Hole Fittings in Nylon and Nickel Plated Brass have UR (ONLY)


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