Sharon, if mean the black plastic u-shaped trim piece with a flexible metal core that comes on most plastic boats I'd check with NRS or other plastic kayak distributors. Trim-Lock Corp. makes all kinds of that stuff that works well for recessed hatches on wood kayaks (thanks to Tom Stanfield in Alaska for that hint). Some kayak shops have that trim stuff coming off of rental boats or have it in stock. Harmony should be able to steer you to a dealer. All the rental Perceptions end up losing that stuff after a few dozen practice rescues.