Atlantic Portlight Seal

Restore a Watertight Seal for Lewmar Atlantic Portlights

The Lewmar Atlantic Portlight Seal is a direct-fit replacement designed to renew the watertight integrity of Atlantic-series portlights. Over time, original seals can compress, harden, or degrade, leading to leaks or drafts, this replacement restores proper closure and keeps your cabin dry and protected.

Reliable Marine-Grade Seal Performance

Manufactured from durable marine-grade sealing material, the Atlantic Portlight Seal is built to withstand UV exposure, saltwater, and temperature variations. Once installed, it ensures a snug, uniform seal around the portlight perimeter for dependable all-weather performance.

Precision Fit for the Atlantic Series

Tailored specifically for Lewmar’s alloy-framed Atlantic Portlights (produced from 1994 onward), this seal matches the frame profile and compression requirements of the original design. This guarantees a clean fit and proper portlight function after replacement.

Maintains Comfort and Reduces Drafts

A fresh seal not only prevents water ingress but also reduces air leaks and rattling, improving interior comfort. Replacing worn seals is one of the most effective ways to refresh older portlights and maintain a quieter, more insulated cabin environment.

Simple Replacement for Ongoing Portlight Maintenance

Designed for straightforward installation during routine maintenance, the Atlantic Portlight Seal ensures your portlight continues to operate smoothly and close securely. It is available in sizes matched to Lewmar’s Atlantic range, making selection easy and accurate.