NSI Industries RF21NA-BK - Dome Cap Spiral-Flex Cable Gland, black, Polyamide, 3/4" NPT, cable range .51 - .71
NSI Industries

RF21NA-BK

UPC: 785411508962

Contact for Pricing

Overview

NSI Industries RF21NA-BK Dome Cap Spiral-Flex Cable Gland is a non-metallic, liquid-tight cable gland designed for secure and strain-relieved cable entry in industrial applications. Constructed from durable polyamide (nylon) with a black dome cap, this gland provides IP68-5 Bar (NEMA 6P) protection when used with an O-ring and locknut, ensuring resistance to water, dust, and environmental contaminants. The spiral-flex design accommodates cable diameters from 0.51" to 0.71" (13mm to 18mm), making it ideal for flexible cables in harsh environments. The gland features a neoprene seal and zinc-plated steel nut for enhanced durability and corrosion resistance. Compatible with 3/4" NPT threaded entries, the RF21NA-BK is UL Recognized (File No. E76954) and CSA Certified (File No. LR32159), meeting rigorous safety standards for electrical installations. Common applications include industrial machinery, control panels, and outdoor enclosures where reliable cable strain relief and environmental sealing are critical.
  • Non-metallic polyamide construction for corrosion resistance
  • Spiral-flex design for flexible cable strain relief
  • IP68-5 Bar (NEMA 6P) rating with O-ring and locknut
  • Cable range: 0.51" to 0.71" (13mm to 18mm)
  • UL Recognized (E76954) and CSA Certified (LR32159)

Specifications

Color
Black
Material Quality
Polyamide
Operating Temperature, Maximum
176 F
Operating Temperature, Maximum
80.0000 °C
Operating Temperature, Minimum
-4 F
Operating Temperature, Minimum
-20.0000 °C
Temperature Rating
-20 to 80 Deg C C
Package Dimensions (L x W x H)
1.3 IN x 1.09 IN x 1.09 IN
Package Dimensions (L x W x H)
3.302 cm x 2.7686 cm x 2.7686 cm
Package Weight (Imperial)
0.477 L
Package Weight (Metric)
0.216 kg

You May Also Be Interested In

Dome Cap Spiral-Flex Cable Gland, black, Polyamide, 3/4" NPT, cable range .35 - .63

RF21NR-BK

Dome Cap Spiral-Flex Cable Gland, black, Polyamide, PG21, cable range .51 - .71

RF21AA-BK

Dome Cap Spiral-Flex Cable Gland, black, Polyamide, 3/8" NPT, cable range .15 - .32

RF09NA-BK

Dome Cap Spiral-Flex Cable Gland, black, Polyamide, 1/2" NPT, cable range .23 - .47

RF13NA-BK

Dome Cap Spiral-Flex Cable Gland, black, Polyamide, 3/8" NPT, cable range .12-.28

RF09NR-BK

Frequently Asked Questions about NSI Industries

What technical support does NSi Industries offer?

NSi Industries offers dedicated technical support through their toll-free technical support line at 888.500.4598. They are committed to customer satisfaction and promise to make every reasonable effort to remedy any product or service issues. Additionally, customers can contact their customer service team at 800.321.5847 or email [email protected] for further technical assistance.

What are the key features of NSi Industries products?

NSi Industries products feature exceptional versatility, reliability, and safety across multiple industrial automation categories. Key features include insulation piercing connectors with no wire stripping required, watertight and corrosion-free designs, wide wire range compatibility (from #14 AWG to 750 MCM), and the ability to install on energized conductors. Their product lines like Easy-Tap™ Connectors and TORK® Digital Timers demonstrate advanced capabilities such as turbo spacers, double shear-head bolts, astronomic scheduling, and enhanced switching technologies.

What environmental ratings do NSi Industries products have?

NSi Industries enclosures feature robust environmental ratings, including IEC 60529 IP66 certification, NEMA Type 1, 2, 3, 4, 4X, 12, and 13 ratings, and UL/CSA standards. Their products are designed for both indoor and outdoor applications, with protection against dust, water, corrosion, and extreme temperatures ranging from -40°F to 266°F.

How are NSi Industries products typically installed?

NSi Industries products are typically installed using detailed mechanical and digital wiring diagrams that specify precise connection methods for various voltage configurations (120V, 208V, 240V, 277V, 480V). Installation involves carefully following product-specific wiring schematics, which include clear terminal block connections, ground wire specifications, and phase alignment requirements. Professional electricians and technicians should reference the specific product's wiring diagram to ensure correct installation and electrical compliance.

What industries and applications are NSi Industries products used for?

NSi Industries provides electrical and automation products for diverse industrial applications, including lighting control, electrical enclosures, wire management, connectors, and sensor technologies. Their product lines serve commercial, industrial, and infrastructure markets with solutions for electrical infrastructure, control systems, and safety-critical environments.

What are the main product lines offered by NSi Industries?

NSi Industries offers a comprehensive range of industrial products including TORK® Photocontrols, Polaris™ Lighting Controls, Easy-Twist™ Grounding Solutions, Miniterms, Cable Ties, Connectors, Enclosures, Occupancy Sensors, and Wire Management systems. Their product lines span electrical components, control devices, and industrial automation accessories designed for diverse applications in commercial and industrial settings.

What accessories are available for NSi Industries products?

NSi Industries offers a range of accessories for their product lines, including photocontrol accessories like replacement caps, mounting brackets, and receptacles. Specific accessories include shorting caps, open caps, 3-pin and 7-pin receptacles, and utility mounting brackets for conduit photocontrols. For specialized applications, NSi recommends contacting their customer service team to discuss custom accessory needs.