THIS PRODUCT REPLACES ITEM 635480

The 21420 Rubber Coupling is a premium-grade, flexible pipe connector designed to join two 3-inch pipes with unmatched reliability and ease. Constructed from durable, chemical-resistant rubber and reinforced with corrosion-proof stainless-steel bands, this coupling delivers a watertight seal ideal for residential, commercial, and industrial plumbing systems.

Whether you're repairing, replacing, or transitioning between pipe materials, this coupling is engineered to handle the job with long wear resistance, self-tightening performance, and code-compliant durability. It’s compatible with Schedule 40 pipe systems and works with cast iron, PVC, ABS, copper, and steel pipes.

Key Features & Benefits

• Universal Fit: Connects 3" pipes of various materials including cast iron, PVC, ABS, copper, and steel.
• Flexible Rubber Construction: Absorbs vibration and accommodates slight misalignments for a secure fit.
• Stainless Steel Bands: Rust-resistant clamps provide strong, long-lasting sealing force.
• Leak-Proof Seal: Prevents infiltration and exfiltration in both gravity-flow and low-pressure systems.
• Quick Installation: No special tools required—tighten clamps with a screwdriver, nut driver, or socket wrench.
• Temperature & Pressure Resistant: Operates reliably from -30°F to 140°F and up to 150 PSI. [varcopumper.com], [nabcoparts.com]
• Code Compliant: Meets ASTM C564 and other plumbing standards for safe use in residential and commercial systems.
• Versatile Applications: Ideal for plumbing, drainage, sewer, and underground installations.

Technical Specifications

• Model Number: 21420
• Connection Size: 3" x 3"
• Material: Flexible rubber with 300-series stainless steel clamps
• Pressure Rating: Up to 150 PSI
• Temperature Range: -30°F to 140°F
• Pipe Compatibility: Schedule 40
• Color: Black
• Weight: Approx. 0.75 lbs
• Installation Type: Clamp-on with worm gear bands

Ideal Uses

• Pipe repair and replacement
• Connecting dissimilar pipe materials
• Drain, waste, and vent systems
• Underground and outdoor plumbing
• Commercial and residential installations