Stillwater Seamless Density Sink

Two Size Heavy

Take control of the entire water column with the Scientific Anglers Stillwater Seamless Density Sink Fly Line, a premium sinking fly line designed specifically for stillwater anglers targeting trout with nymphs, streamers, and multi-fly rigs. Featuring Scientific Anglers’ AST Plus technology and Seamless Density construction, this line delivers excellent shooting ability, increased durability, and smooth, controlled sinking performance.

The Seamless Density design creates a smooth transition between different line densities, helping eliminate hinging and maintain a more direct connection to the fly. Its two-size-heavy design provides the power needed to efficiently cast multiple flies, long leaders, and longer distances, while textured hang markers at 10 and 20 feet from the tip provide an easy reference during retrieves.

Available in multiple density configurations, the Stillwater Seamless Density Sink allows anglers to target everything from fish feeding just below the surface to trout holding deep near the bottom.

Key Features

• Premium sinking fly line designed specifically for stillwater fishing
• Seamless Density technology for smooth transitions between sink rates
• Helps eliminate hinging for a straighter connection to the fly
• AST Plus technology for superior slickness and durability
• Two line sizes heavy for efficient rod loading
• Designed for nymphs, streamers, and multi-fly rigs
• Handles long leaders and long-distance casts
• Textured hang markers at 10 and 20 feet from the tip
• Excellent control throughout the retrieve
• Suitable for cold and medium-temperature conditions
• Welded loops for easy leader attachment
• SA Line ID for easy line identification
• Audible Reference Point
• Made in the USA

Specifications

• Brand: Scientific Anglers
• Series: Stillwater
• Model: Seamless Density Sink
• Line Type: Weight Forward Sinking
• Application: Freshwater / Stillwater
• Technology: AST Plus / Seamless Density
• Weight Profile: 2 Sizes Heavy
• Head Length: 45 ft / 13.7 m
• Total Length: 100 ft / 30.5 m
• Available Line Weights: WF-5-S through WF-8-S
• Primary Species: Trout
• Country of Origin: USA

Sink Options

• Intermediate / Sink 3: Intermediate 1.7 ips running line with a 3.0 ips Sink 3 head
• Sink 3 / Sink 5: Sink 3 running line with a 5.0 ips Sink 5 head for working the middle of the water column
• Sink 5 / Sink 7: Sink 5 running line with a 7.0 ips Sink 7 head for quickly reaching deep water
• Parabolic Sink 3 / Sink 5 / Sink 3: Sinks in a U-shaped profile for effectively searching larger portions of the water column

Perfect For

Ideal for anglers fishing nymphs, streamers, multiple-fly rigs, and deeper stillwater presentations. The Stillwater Seamless Density Sink is especially well suited for anglers who need precise depth control, long-distance casting, smooth density transitions, reduced hinging, and a direct connection to the fly when targeting trout throughout the water column.