Threlaco Oil-Only Bilge Socks 5" x 16" (2-Pack) — Slim, Oil-Selective Absorbent for Bilges & Drains

Threlaco 2-pack oil-only bilge socks are slim, high-capacity absorbent tubes designed to trap oil and grease while repelling water, keeping bilges, sumps and drains clear.

These 5" x 16" bilge socks combine a water-shedding outer mesh with an oil-selective absorbent fill so they soak up hydrocarbons without swelling from water. Sold as a convenient pair, they are sized to fit tight spaces in boats, workshops, pool equipment rooms and industrial basins. The construction focuses on selective absorption and easy replacement, making routine containment and cleanup faster and less messy.

How do these bilge socks separate oil from water?

The socks use a specially formulated poly absorbent inside a tight, water-resistant mesh sleeve. Oil and other hydrocarbons are rapidly drawn into the fill while the mesh prevents bulk water from entering, so the socks absorb only pollutants and leave surrounding water largely unaffected.

• Oil-selective polymer fill that preferentially attracts hydrocarbons.
• Durable mesh outer layer that sheds water and resists tearing.
• Narrow tube shape that maximizes contact area in confined bilges.
• Quick uptake reduces floating oil and sheen in small basins.

Where and how should I install these in a boat or facility?

Place the socks across bilge drains, around pump intakes, or along low points where oil accumulates. Their 5 x 16 inch size fits crowded spaces; lay them lengthwise or coil them to increase surface contact. Replace when saturated or when oil breakthrough becomes visible on the mesh.

• Lay along bilge sump edges or directly over drain openings.
• Tuck behind machinery or beneath pump hoses to intercept leaks.
• Use two in series for extended service life and staged filtration.
• Replace per local disposal rules once oil retention capacity is reached.

How much oil will each sock hold and how often do I need to change them?

Each 5" x 16" sock holds a notable volume of oil relative to its compact size, with performance depending on oil thickness and exposure time. In routine bilge conditions a single sock commonly lasts days to weeks; heavy spills or continuous leakage will shorten service life, so inspect regularly and swap when oil saturation is visible.

• Good uptake for intermittent drips and small spills.
• Inspect visually: dark, saturated mesh indicates replacement time.
• Use multiple socks or larger capacity systems for chronic leaks.
• Dispose as oil-contaminated waste per regulations.

What practical benefits and limitations should I know?

These bilge socks make targeted oil capture simple and low-cost, reducing manual pumping and improving water quality in confined areas. They do not absorb water, so they won’t add weight from seawater, but they are not a substitute for primary containment in major spills and should be paired with proper spill response plans.

• Compact, easy-to-place design that won’t soak up water weight.
• Two socks per pack for staged use or quick replacement.
• Not intended as standalone solution for large or persistent spills.
• Requires proper disposal as oil-bearing absorbent material.

Who is this for: Threlaco 2-pack bilge socks suit boat owners, marina technicians, pool operators and facility maintenance teams who need a simple, space-saving way to trap oil and grease in small basins, bilges, drains and sumps. They work best where leaks are intermittent or where targeted, replaceable oil capture improves routine maintenance and reduces visible hydrocarbon sheens.