Waterway 711-4050 Ribbed O-ring/Gasket for 1-1/2 inch Spa Heaters and Pump Unions | Waterway Plastics

Overview

Waterway Plastics designs, engineers, and manufactures trusted spa components in the USA. Since 1973, Waterway has emphasized innovation, quality materials, and dependable performance. The 711-4050 ribbed O-ring gasket is built for 1-1/2 inch heater and pump union connections, using premium NSF approved materials and adhering to industry certifications and standards. This part is produced at Waterway’s Oxnard, California facility, reflecting the brand’s long-standing commitment to craftsmanship and durability.

Key specifications

• Waterway Part Number 711-4050
• Inside diameter approx 1 9/16 inches
• Outside diameter approx 2 5/16 inches

Materials, origin, and certifications

• Made in the USA at a 460,000 sq ft facility in Oxnard, CA
• Premium NSF approved materials
• Meets industry certifications and standards for spa equipment

Compatibility and real‑world use

Designed for 1-1/2 inch heater and pump union connections, this ribbed O-ring helps maintain a reliable seal between joints. Replacing worn gaskets is a practical step in routine spa maintenance and can support steady performance during seasonal use and frequent maintenance cycles.

• Fits 1-1/2 inch spa heater and pump union assemblies
• Ribbed design offers a secure, flexible seal that accommodates slightly imperfect surfaces

Why choose Waterway 711-4050

Choose this part when you need a genuine Waterway gasket with a proven fit for standard spa connections. Its USA production, NSF‑approved materials, and adherence to certifications provide a dependable option for technicians and DIY enthusiasts alike, without making guarantees about outcomes.