Starway - Viton O-Ring 6.07 × 1.78 mm (Type 2027) for Automatic Backwash Valve - 7039416

Starway – Viton O-Ring 6.07 × 1.78 mm (Type 2027) for Automatic Backwash Valve

This is a genuine Starway replacement Viton (FKM) O-ring, sized 6.07 mm inner diameter × 1.78 mm cross-section, designed to maintain a leak-free seal within the Starway Automatic Backwash Valve. It provides a reliable static seal that keeps the valve operating correctly during automated sand-filter backwash cycles.

Compatibility

This O-ring is a genuine Starway spare part for the Starway motorised 5-way Automatic Backwash Valve used in pool sand filtration systems. Always verify your valve model and the part reference (Type 2027) against your valve’s parts list before ordering, as multiple O-ring sizes are used within the valve assembly.

Why Genuine Viton Matters

Viton (FKM) fluorine rubber offers outstanding resistance to pool chemicals, chlorine by-products, and elevated temperatures — far outperforming standard NBR rubber in harsh pool environments. With a working temperature range up to +200 °C and a Shore A hardness of approximately 80, this O-ring holds its shape and sealing force over extended service life, reducing the risk of costly valve leaks or premature failure.

Installation

Before fitting, clean the O-ring groove thoroughly and remove all traces of the old seal. Apply a thin coat of silicone grease to the new O-ring to ease installation and prevent rolling. Hand-tighten only — no tools should contact the O-ring directly. If you are unsure about disassembling the backwash valve, consult a qualified pool technician.