Permabond PT328 Polyurethane Adhesive 50 mL Low Shelf Life

Description

Permabond PT328 is a two-part polyurethane adhesive supplied here in a 50 mL low shelf life cartridge for bonding metals, plastics, composites, and similar industrial substrates. Its 1:1 mix ratio and 15-minute pot life make it useful when a repair or assembly needs more working time than very fast urethane grades allow.

Permabond PT328 Benefits

• 1:1 mix ratio keeps cartridge dispensing straightforward with compatible guns and static mixers.
• Fifteen-minute pot life gives crews time to cover larger areas or align multi-part assemblies.
• Thixotropic black paste helps control sag on vertical joints and uneven surfaces.
• Flexible cured bond supports assemblies exposed to impact, vibration, and movement.
• Polyurethane chemistry bonds many metals, plastics, and composites after proper surface prep.

This clearance listing should be used only after the buyer confirms date code, storage history, and expected cure behavior. For production programs, run a small trial on the actual substrates before committing low shelf life material to finished goods.

Where Permabond PT328 Fits

• Composite bonding and repair where a medium working time is useful.
• Metal-to-plastic assembly with moderate gap filling needs.
• Transportation, sign, and general manufacturing repairs.
• Bonding panels, brackets, trims, and fabricated parts.
• Trial work where a 50 mL cartridge is easier to control than bulk material.

Surface Preparation And Use

Bond surfaces should be clean, dry, and free of oil, dust, mold release, oxidation, and loose coating. Abrade glossy metals, plastics, or composites when the material allows it, then clean again before dispensing. Purge the cartridge through the static mixer until both sides flow evenly and the mixed color is consistent.

Clamp or fixture parts without squeezing all adhesive out of the joint. Because this item is low shelf life, check for blocked cartridge outlets, uneven flow, soft cure, or tacky residue before using it on critical work. Keep a record of the test date and cure result.

Technical Details And Documentation

Permabond data lists PT328 as a two-component polyurethane adhesive with 1:1 mix ratio, 15-minute pot life, 5,500 cP thixotropic viscosity, 15 percent elongation, and Shore D68 hardness. Review current information from Permabond before production use.

Ordering Help

For related urethane and structural bonding products, browse Chemical Concepts urethane adhesives. For help choosing between PT321, PT326, PT328, or a current-dated alternative, call (800) 220-1966 or email [email protected].