Scanstrut DS21A-S Stainless Steel Small Deck Seal

Scanstrut DS21A-S Stainless Steel Small Deck Seal (DS21A-S)

The Scanstrut DS21A-S is a marine-grade 316 Stainless Steel Small Deck Seal engineered to route pre-terminated cables through decks, transoms, and cabin bulkheads without cutting or unthreading factory plugs. Accommodating connectors up to ∅ 21 mm (0.83") and smaller outer cable diameters between 4 - 9 mm (0.155" - 0.35"), it provides an IP68 100% waterproof seal around VHF antenna, GPS, solar panel, light, and transducer cabling.

Featuring a domed profile that sheds water and deflects physical impacts, the DS21A-S utilizes a tapered neoprene bung alongside a captive base gasket to eliminate the need for liquid silicone sealant during installation. The 316 stainless steel outer cap delivers long-term corrosion resistance, structural strength, and a polished aesthetic on high-end yachts, powerboats, and commercial vessels.