GROCO Replacement Buna-N O-Ring

The GROCO Replacement Buna-N O-Ring (Part Number 2-256) is a precision sealing component designed for marine plumbing and through-hull systems where reliability at depth is essential. This o-ring is crucial for anglers who understand that a single failed seal can lead to significant issues, such as flooding a bilge or compromising a livewell.

Constructed from Buna-N (nitrile) elastomer, this o-ring is engineered to resist degradation from saltwater, fuel, and thermal cycling, making it ideal for underwater applications. It maintains its elasticity across a wide temperature range, outperforming natural rubber in hydrocarbon resistance, ensuring a reliable seal.

Boaters using GROCO through-hull systems, whether on a small center console or a larger cruising sailboat, will find this replacement o-ring essential for routine maintenance and emergency repairs. Installation is straightforward, allowing for quick replacement without the need to replace the entire fitting.