Rimlex 620 Blue

Rimlex® 620B is a soft single part, heat cure, polyurethane resin system. It has been specifically de- signed for use as a compression seal. It should be applied to one side of the mating components surface and allowed to cure prior to assembly. Clamping the two components together compresses the sealant and therefore effects a seal.
Rimlex® 620B has excellent chemical resistance to most automotive oils, fuels, antifreeze and transmission fluids. The material will function in temperatures up to 150oc*

• Prevents galvanic corrosion between dissimilar materials /Insulates.
• Can be applied to virtually any headed fastener
• Forms a dry to touch coating.
• Provide repeatable assembly properties.
• Reduces noise and vibrations.
• Fills gaps
• Good adhesion to ferrous/non ferrous surfaces.
• No mess or waste as with line applied products.
• Conform to complex paths.

To ensure consistency of application of the Rimlex® 620B on components, it is best applied via automated dispensing ideally using a X/Y robot to give a known and consistent height.

Please call us to discuss application equipment as we can recommend suitable equipment from partner companies.

Rimlex® 620B has been specifically designed for use as a pre-applied gasket type system for sealing rivets, threaded plugs and bolts.
The interface geometry of the mating surfaces is critical for the correct functioning of the Rimlex® system. The mating hole should be burr free and chamfered to ensure material is not stripped or cut away during installation. It is recommended that all torsional applications be specifically designed in conjunction with our engineering staff who can advise the correct geometry or form for successful sealing and re-use.

Rimlex® 620B has been successfully used for potting electronic circuit boards and as flange seals on rivets or torsional fasteners on metallic and engineering plastic products***


– for torsional applications an additional torque modifying topcoat is normally recommended.
*100°C for continuous usage, 150°C possible for intermittent use subject to testing.
**When stored in the original unopened container between 5oc and 25oc
***plastic parts must be able to withstand cure temperature of 160oc
****may turn a greenish colour after prolonged life due to pigments
Re-usability is subject to application, specific face/joint design and compression stops may be required.

The IMDS number for Rimlex 620B is 108508944/1