Elkhart Supply 68004 3/4in Copper Crimp Ring for Polybutylene Tubing 10-Pack

The Elkhart Supply 68004 is a 3/4-inch pure copper crimp ring engineered specifically for use with polybutylene (PB) tubing systems. Conforming to ASTM F1380 standards, these rings provide a secure, leak-free connection between polybutylene SDR-11 tubing and compatible barb fittings. Each pack contains 10 rings, making them ideal for plumbing repairs, maintenance projects, or installations involving existing polybutylene pipe systems.

Copper crimp rings work by being compressed around the tubing using a standard crimp tool, creating a permanent, pressure-tight seal. The pure, annealed copper construction ensures consistent deformation during crimping for a reliable, uniform connection every time.

Key Features:

• Meets ASTM F1380 standard for polybutylene crimp rings
• Designed for use with SDR-11 polybutylene tubing only
• Pure annealed copper construction for consistent, reliable crimping
• 3/4-inch size fits standard 3/4 in. PB tubing
• Compatible with standard crimp-style installation tools
• Not compatible with PEX tubing or expander-style fitting systems
• Convenient 10-pack quantity for repair and installation jobs

These crimp rings are a trusted solution for plumbers and contractors working with legacy polybutylene plumbing systems. Always use a calibrated PB crimp tool and verify ring seating before pressurizing the system.