Pacer RX-500 Range Extended Cyanoacrylate Adhesive – 1 lb (453 g) Bottle

This 1 lb (453 g) bottle of Pacer RX-500 is the production volume size of the thickest Range Extended grade Pacer offers in bulk. At 350 to 550 cP with .008 in gap capability, it covers loose fit-up on surfaces a standard cyanoacrylate will not cure on, and it is the only grade in the RX Series that combines a wide gap with a 1 lb bottle. RX-700 and the gel are thicker but come in small packages only, and RX-100 comes in bulk but fills just .005 in. If your line needs non-surface-sensitive chemistry, real gap capability, and volume all at once, this is the grade.

Package Details

Full shear strength figures by substrate, the RX viscosity selector, and guidance on setting up a bonding station are on the main Pacer RX-500 product page, or in the Pacer RX Series technical data sheet (PDF).

Why This Is the Grade Production Lines Land On

• It is the only Range Extended grade that pairs a wide gap with a 1 lb bottle. RX-700 at .010 in and the RX Gel at .020 in are both small-package only, and RX-100 in the 1 lb fills only .005 in.
• 453 g against 20 g, about 23 times the material, and it sells individually rather than in a case of 10, so it’s the easier single purchase.
• .008 in gap capability absorbs fit-up variation across a production run, which matters more at volume than on a bench where an operator can pick and choose parts.
• Prove the chemistry first if you’re new to it. Run the 20 gram on the actual substrate in the actual conditions before you buy a pound.
• This is a bulk container, not a bench bottle. Most shops decant into applicator bottles or charge a dispensing system from it rather than handing the 1 lb to an operator.
• Shelf life is one year stored per the data sheet, and an opened container works against ambient humidity from day one. Buying beyond your annual consumption does not save money.

Performance in Production

• Enough volume to feed a daily bonding operation without a purchase order every other week.
• Bonds through silicone greases, oils, and release agents, and onto plated parts, which is what lets you take degrease, abrade, and prime steps out of the process entirely.
• .008 in gap capability covers parts that vary across a run, so you are not sorting fit-up before the bonding station.
• Substrate failure on ABS, rigid PVC, nylon, polycarbonate, SBR, and EPDM. If you run rubber parts at volume, that EPDM result plus bulk availability is the reason to standardize here.
• 2300 psi on steel, 1600 on aluminum, 1400 on copper, the same as every liquid RX grade. Design the bond area against the shear figure rather than the 4000 psi tensile number.
• Fixture in 1 to 5 minutes and 80% of strength in 15 to 30 minutes, though a filled .008 in gap cures from the outside in so allow the longer end before loading.
• Plan an accelerator into the station if you work near the top of the gap range. Pacer recommends accelerators specifically for larger gaps, at the cost of possible white frosting and some loss of cure strength.
• At 350 to 550 cP it holds position better than a thin grade but it is not a gel. Build the station around a horizontal or fixtured joint.
• Decant only what gets used in a shift and keep transfer containers dry and capped. Cure rate tracks relative humidity, so open material in a humid shop behaves differently than a fresh bottle.
• Clean the parts anyway. Pacer’s guidance still calls for surfaces free from oil and grease, so this buys process margin rather than removing cleaning.

Common Applications

• Daily production bonding of plated, oily, or mold-released parts
• Runs with fit-up variation up to .008 in
• EPDM and SBR rubber, gaskets, seals, and trim at volume
• Uneven or irregular mating surfaces on difficult substrates
• Polycarbonate and nylon assemblies
• Feeding automatic dispensing equipment on a bonding cell
• Filling shop applicator bottles from bulk
• Removing surface preparation steps from an existing bonding process
• Contract manufacturing calling out MIL-A-46050C Type II, Class 3

Related Products

• Pacer RX-500 Range Extended Cyanoacrylate Adhesive (350-550 cP), full detail and both sizes
• Pacer RX-100, 1 lb bottle, thinner at .005 in gap, the other RX grade in bulk
• Pacer RX-700 Range Extended (600-800 cP), thicker at .010 in gap, 20 gram only
• Pacer RX Gel, non-sag non-running gel for vertical applications, .020 in gap
• 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 RX-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 than a thin grade would. If you need to budget material against a part count, send us the part and we’ll work it out from a sample.

Which Pacer RX grades come in a 1 lb bottle?

RX-100 and RX-500 only. RX-50 and RX-700 are 20 gram bottle only, and the RX Gel comes in 20 gram and 200 gram tubes. RX-500 is therefore the thickest Range Extended grade you can buy in bulk, filling .008 in against RX-100’s .005 in. That is usually the deciding factor for a production line.

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

Yes, identical. Same non-surface-sensitive chemistry, same 350 to 550 cP viscosity, same .008 in gap capability, same MIL-A-46050C Type II, Class 3 rating. Only the container and the order quantity change. Nothing needs requalifying when you step up.

Can I decant Pacer RX-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.

Should I buy the 1 lb or trial the small bottle first?

Trial first. RX chemistry gets specified to solve a specific bonding failure, and the only way to know it solves yours is to put it on the actual part. Run the 20 gram, confirm the bond on the real substrate in your real humidity, then buy the pound. Send us the part and we’ll help you set up the test.

Does Pacer RX-500 bond EPDM rubber?

Yes. In ASTM D-1002 testing RX-500 gives substrate failure on EPDM, meaning the rubber tears before the bond does, and SBR is the same. Pacer’s general purpose E Series grades reach only 100 psi on EPDM. Since this is the thickest RX grade available in bulk, it’s usually the right starting point for rubber work at production volume.

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

Refrigerate unopened bottles for optimal results. A 1 lb bottle takes longer to reach room temperature than a small one, so let it warm through before opening. Once opened, store in a cool, dry location away from heat sources. Stored that way, expect a one year shelf life.

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

Our SKU is PAC-FG04043. The Pacer part number is FG04043 and the UPC is 0 87093 00238 8. On older Pacer paperwork the same item shows as Pacer item number 11740038.

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].