Sea-Dog Gas Filled Lift Spring - 20" - 90#

The Sea-Dog Gas Filled Lift Spring – 20" – 90# is a pneumatic support component engineered to the same rigorous standards applied in marine original equipment manufacturing. This 20-inch gas spring delivers 90 pounds of lift force, making it suitable for hatches, tonneau covers, truck caps, tool boxes, storage compartments, and utility applications where controlled, assisted opening is required. The compact 0.25 lb weight and streamlined profile integrate easily into space-constrained installations.

Sea-Dog's multi-lobe seal design sets this gas spring apart in harsh environments. The seal geometry prevents corrosion infiltration and extends service life in salt-air, moisture-heavy, and temperature-variable conditions—critical advantages for marine, RV, and coastal truck bed applications. At 20 inches extended length with 90# force rating, this spring balances sufficient lifting power for lids and covers up to moderate weight without over-extension force that could strain hinges or mounting hardware. The 2-year manufacturer warranty reflects confidence in durability and performance consistency across multiple installation seasons.

This gas spring is purpose-built for owners and technicians maintaining marine vessels, travel trailers, truck caps, and utility rigs where reliable lid support reduces manual effort and extends component life. The predictable 90-pound assist ensures smooth, controlled opening without slamming or requiring secondary prop rods. Installers working in saltwater environments, freshwater installations, and outdoor storage applications consistently choose Sea-Dog components for their proven corrosion resistance and consistent force delivery across temperature swings.

Gas springs rated at 90# are industry-standard for medium-duty lid and hatch applications. Understanding your cover's weight and hinge leverage before selection ensures proper balance—undersized springs create sluggish opening, while oversized units stress hardware. The 20-inch dimension accommodates most truck bed tonneau and storage box openings while the compact cross-section fits tight mounting brackets.