USMC SealLine MACS Sack Waterproof Dry Bag 9 Liter Green ILBE

Genuine USMC SealLine MACS Sack – 9 Liter Waterproof Dry Bag

Description

This listing is for the Genuine USMC SealLine MACS (Multipurpose Air-Compression System) Sack. Developed by SealLine for the Marine Corps’ ILBE (Improved Load Bearing Equipment) system, this is not your average dry bag. It is a rugged, tactical-grade waterproof storage solution designed to keep your critical gear—like socks, electronics, or down layers—bone-dry in the most punishing maritime or jungle environments. With its integrated manual air valve, you can compress the contents after sealing, saving valuable space in your pack.

Technical Specifications

• Manufacturer: SealLine (Cascade Designs, Inc.)
• Capacity: 9 Liters (approx. 550 cubic inches).
• Color: Olive Drab / Green.
• NSN: 8465-01-542-7688.
• Material: 210D polyurethane-coated nylon for maximum abrasion resistance and waterproofing.
• Closure: Roll-down waterproof seal with a heavy-duty buckle.

Key Features & Design Elements

• 1-Way Purge Valve: Features a manual twist-valve that allows air to escape after the bag is sealed. This allows you to "squish" the bag down to its smallest possible size.
• Waterproof Security: The roll-top closure, combined with high-frequency welded seams, creates a completely submersible barrier against water, sand, and dust.
• Tapered Shape: Specifically designed with a rounded bottom and slightly tapered profile to slide easily into the side pockets or main compartment of a rucksack.
• Rugged Construction: Built to much higher standards than civilian dry bags; the fabric is thick enough to resist punctures from gear or rough handling.
• Lash Point: Includes a durable D-ring on the buckle for securing the bag to the exterior of a pack or boat.

Condition: Used by our Troops in Great Condition, may show minor sign of use, fully functional, Overall Great Condition.