Pacer PX-500 Plastic Performance Cyanoacrylate Adhesive – 1 lb (453 g) Bottle

This 1 lb (453 g) bottle of Pacer PX-500 is the production volume size of Pacer’s thicker plastics cyanoacrylate, 400 to 600 cP with .008 in gap fill. It’s the size for a moulding or assembly line bonding plastic every day where the parts do not mate consistently. PX is the only Pacer cyanoacrylate family built on ethyl propyl rather than ethyl or ethyl hybrid, and on ABS and rigid PVC it gives substrate failure, meaning the plastic breaks before the bond. At 453 g it holds about 23 times what the 20 gram bottle does, and it sells individually rather than by the case.

Package Details

Full property data, the substrate table, and guidance on measuring gap across a run of moulded parts are on the main Pacer PX-500 product page, or in the Pacer PX Series technical data sheet (PDF).

Choosing the 1 lb Over the 20 Gram

• 453 g against 20 g, about 23 times the material, and it sells individually rather than in a case of 10.
• Prove the bond first. Moulded plastic varies with release agent and regrind content, so run the 20 gram on parts from real production before you buy a pound.
• Measure your worst-case gap before you standardize. If it’s under .004 in, PX-50 in the 1 lb is the better grade and keeps a higher aluminum figure.
• This is a bulk container, not a bench bottle. Most shops decant into applicator bottles or charge a dispensing system from it.
• Refrigeration matters more at this size. A cold 1 lb bottle takes real time to reach room temperature, and opening it early pulls condensation into a lot of material at once.
• Shelf life is one year stored per the data sheet, and an opened container works against ambient humidity from day one.

Performance in Production

• Enough volume to feed a daily plastic bonding operation without a purchase order every other week.
• .008 in gap fill absorbs part-to-part variation across a run, which matters more at volume than on a bench where an operator can sort parts.
• Substrate failure on ABS and rigid PVC. Design the bond area against the tensile strength of your specific plastic, since the adhesive is not the limiting factor there.
• Ethyl propyl chemistry, formulated for plastics and elastomers rather than adapted from a general purpose grade.
• 4400 psi tensile and 2700 psi tensile shear on steel if the metal side of a mixed joint matters.
• 700 psi on aluminum, the lowest figure Pacer publishes. Do not standardize a line on PX-500 if any of the joints involve light alloy.
• Fixture in 1 to 5 minutes and 80% of strength in 15 to 30 minutes. A filled .008 in gap cures from the outside in, so allow the longer end before loading.
• Plan a Pacer accelerator into the station if you work near the top of the gap range, since Pacer recommends accelerators specifically for larger gaps.
• Elongation under 2%. Rigid bond, so design the joint for shear rather than peel or flex.
• Decant only what gets used in a shift and keep transfer containers dry and capped. Cure rate tracks relative humidity.
• No published sag figure. Build the station around a horizontal or fixtured joint.

Common Applications

• Daily production bonding of moulded ABS and rigid PVC parts
• Injection moulding cells where fit-up varies across shots
• Plastic fabrication and assembly at volume
• Runs where a tool has worn and the joint has opened up
• Plastic parts that warp out of flat even when dimensionally in spec
• Plastic to steel joints on a production line
• Feeding automatic dispensing equipment on a bonding cell
• Filling shop applicator bottles from bulk
• Contract manufacturing calling out MIL-A-46050C Type II, Class 2

Related Products

• Pacer PX-500 Plastic Performance Cyanoacrylate Adhesive, full detail and both sizes
• Pacer PX-50, 1 lb bottle, .004 in gap for closer fit-up, better on aluminum at 1000 psi
• Pacer RX-500, 1 lb bottle, same viscosity and gap, plus nylon and polycarbonate data and 1600 psi on aluminum
• Pacer MR-290, 1 lb bottle, .012 in gap, rated to +260F, 2100 psi on aluminum
• Pacer Premium Acetone Accelerator, speeds full cure through larger gaps
• All cyanoacrylate instant adhesives

Frequently Asked Questions

How much adhesive is in a 1 lb bottle of Pacer PX-500?

Net weight is 1 lb (453 g), about 23 times the 20 gram bottle. Pacer’s guidance is one free-falling drop per square inch of bond area, but Pacer does not publish a coverage figure per gram, and a thicker grade filling a wider gap uses more per joint. If you need to budget material against a part count, send us the part and we’ll work it out from a sample.

Is the 1 lb Pacer PX-500 the same adhesive as the 20 gram?

Yes, identical. Same ethyl propyl chemistry, same 400 to 600 cP viscosity, same .008 in gap fill, same MIL-A-46050C Type II, Class 2 rating. Only the container and the order quantity change. Nothing needs requalifying when you step up.

Which Pacer PX grades come in a 1 lb bottle?

Both current grades. PX-500 at 400 to 600 cP filling .008 in, and PX-50 at 30 to 80 cP filling .004 in. Measure your worst-case gap across a real run and pick from that. PX-50 also keeps a higher aluminum figure at 1000 psi against 700.

Should I standardize a line on Pacer PX-500?

Only if the line is genuinely plastic work with loose fit-up. On ABS and PVC it is the right chemistry and gives substrate failure. But at 700 psi on aluminum it is the weakest grade in the Pacer line on light alloy, so a mixed line running any plastic-to-aluminum joints will get a much weaker bond there. Worth also comparing RX-500, which runs the same viscosity and gap with 1600 psi on aluminum and a wider published substrate list. Call us before you standardize and we’ll go through the substrates with you.

Can I decant Pacer PX-500 into smaller applicator bottles?

Shops do it routinely with bulk CA, and Pacer’s published guidance does not cover decanting, so treat it as shop practice rather than a manufacturer instruction. Keep transfer containers clean, dry, and capped, and move only what gets consumed in a shift, since cure rate depends on relative humidity. If you need Pacer’s formal position on repackaging for a quality system, we’ll ask them.

How should Pacer PX-500 be stored, and what is the shelf life?

Refrigerate unopened bottles at 40F (4C) for optimum results, then let the adhesive come up to room temperature before opening. A 1 lb bottle takes longer to warm through, so give it time. Once opened, store in a cool, dry location. Stored that way, expect a one year shelf life.

What is the part number for the 1 lb Pacer PX-500?

Our SKU is PAC-FG05093. The Pacer part number is FG05093 and the UPC is 0 87093 00290 6. On older Pacer paperwork the same item shows as Pacer item number 11740073.

Questions on Fit

Questions on fit for your bonding process, or on volume for a production line? Call (800) 220-1966 or email [email protected].