Pacer MR-290 Moisture Resistant Cyanoacrylate Adhesive

Description

Pacer MR-290 is a moisture-resistant cyanoacrylate adhesive for assemblies that need fast bonding but more working room than a water-thin instant glue. The current Chemical Concepts listing and the Pacer MR Series product data sheet place this grade in the 250 to 350 cP range, with moisture and humidity resistance, thermal cycling durability, and a typical gap capability around .012 inch.

Pacer MR-290 Benefits

• Medium viscosity helps the adhesive stay where it is placed on vertical parts, corner joints, and uneven bond lines.
• Moisture-resistant chemistry is built to retain tensile shear strength better than standard instant adhesives in humid conditions.
• Typical .012 inch gap capability gives crews more flexibility on parts that do not mate perfectly flush.
• Fixture time of about 1 to 5 minutes supports part alignment before the joint locks up.
• Performance on metals, ceramics, rubbers, and plastics makes it useful across maintenance, fabrication, and assembly work.

Buyers usually reach for this grade when they need a cyanoacrylate that can bridge a slightly wider bond line without stepping up to a paste or a two-part adhesive. It fits repair benches, production cells, and field work where humidity resistance matters and the part geometry is not perfectly tight.

Common Applications for Pacer MR-290

• Bonding metal trim, brackets, and light hardware where a medium-viscosity instant adhesive is easier to control.
• Joining rubber, plastic, and ceramic components in general manufacturing and repair work.
• Handling maintenance jobs exposed to intermittent moisture, washdown, or humid plant air.
• Supporting countertop, sign, transportation, and marine repair tasks that need a quick-return adhesive.

Pacer MR-290 Technical Details

• Base chemistry: ethyl hybrid cyanoacrylate.
• Published viscosity: 250 to 350 cP.
• Typical gap: .012 inch.
• Tensile strength on steel: 4,500 psi.
• Temperature use range: -65 F to +260 F.
• Specification compliance: MIL-A-46050C Type II Class 2 and A-A-3097 Type II Class 2.

For best results, parts should be clean and free of oil, grease, and loose contamination before adhesive is applied. Pacer notes that one drop can cover about one square inch of bond area, and that unopened material stored at 40 F can achieve about one year of shelf life. For broader instant adhesive guidance, review The Adhesive and Sealant Council.

If you are comparing medium-viscosity instant adhesives, browse our cyanoacrylate adhesives category. Need help matching pack size, fixture speed, or substrate fit? Call (800) 220-1966 or email [email protected].