SeaGuardian® BIO Foam Pigs

SeaGuardian® BIO Foam Pigs are marine-safe, biodegradable foam pigs designed for internal pipeline cleaning or air exclusion during offshore decommissioning. Formulated from natural polymers and seaweed-derived surfactants, this low-to-medium density foam can be pumped into subsea lines to displace hydrocarbons, water, or air. It is suitable for cleaning operations or for use as a temporary foam bung to block air ingress in sealed systems.

Can be made in a variety of sizes and shapes and designed for different functions from scrapping & cleaning to just keeping systems inert and isolated from ambient conditions. Unlike conventional polyurethane or plastic-based pigs, SeaGuardian® BIO Foam Pigs offer full environmental compatibility. In the event of accidental ocean loss, it dissolves naturally with no microplastic residues or toxic byproducts. The formulation is OECD 301-compliant for ready biodegradability, ensuring breakdown into marine-safe natural components.

• Low- to medium-density closed-cell foam structure

• Excellent wall contact and flow displacement

• Foam degrades naturally in seawater

• Non-toxic, non-persistent, marine biodegradable

• Formulated without microplastics or QACs

• May be injected as liquid foam and set in-line or pre-cast and inserted

• Pipeline internal cleaning (pre-decom or maintenance)

• Temporary air block (foam bung) for isolation during decommissioning

• Hydrocarbon displacement and system preservation

• Foam slug injection for flushing lines

Appearance: White or light green, soft foam
Foam Type: Closed cell, cast or air-foamed
Density: 0.20–0.35 g/cm³
Compression Recovery: 85–95% after 50% crush
Temperature Range: 0–70 °C
Solubility: Fully dissolves in seawater (7–30 days depending on thickness)