SiMP-Seal 650 | Multi-Purpose One-Component SiMP Elastic Adhesive & Sealant, Completely Odorless with Very Low Emissions

SiMP-Seal 650 is a versatile, one-component elastic adhesive and sealant in a caulking gun form, non-sagging, utilizing Silyl Modified Polymer (SiMP), with very low emissions and completely odorless. The adhesive cures under the influence of atmospheric moisture, forming a high-performance, permanently flexible adhesive. It is solvent-free, isocyanate-free, with 0 VOC and no shrinkage.

• Silyl Modified Polymer (SiMP)

• Solvent-free and isocyanate-free. No hazard warning symbols required.

• Certified with Emicode EC1 for very low emissions due to its special formula.

• Completely odorless

• Excellent aging and weather resistance

• Maintains color stability

• Pure white, no yellowing

• Exceptional thixotropy, non-sagging, short bead break

• Permanent flexibility across a wide temperature range

• No bubble formation

• Easy to apply with excellent consistency

• Perfect adhesion without the need for primer on common industrial materials and surfaces

• Neutral properties, safe for the surface

• Can be painted over with various water-based and solvent-based paints (pre-testing recommended)

• Resistant to temperatures up to +180°C for short periods for powder coatings and heat

Application

SiMP-Seal 650 is a high-quality, flexible, and elastic adhesive and sealant, used in elastic sealing and bonding applications for industrial assembly, automotive, transportation (passenger cars, caravans, refrigerated trucks, containers), marine, HVAC (heating, ventilation, and air conditioning), and other industries where a durable, flexible rubber joint or strong elastic adhesive is required with no odor during application and throughout its lifecycle. It is ideal for high-temperature coatings (up to 180°C for short periods) in industrial processes. Approved and certified for bonding on FENIX® materials.

Compliance

• LEED iEQc 4.1; SCAQMD Rule 1168; BAAQMD Reg 8 Rule 51

• CARB VOC levels regulation

Certifications

• EMICODE EC 1PLUS protocol

• EUROFINS IAC GOLD protocol

• VOC Emission class label A+

Technical Data

Instructions for Use

Surfaces to be bonded must be thoroughly cleaned, dry, and free from dust or grease. Pre-treat the bonding surface according to NPT’s application guidelines, and use specific CLEANER or ACTIVATOR from NPT’s product line. Preliminary adhesion testing on the supporting surface is recommended.

Attach the nozzle and cut it to the desired angle to create the desired thickness and shape of the adhesive bead. Insert the adhesive cartridge or tube into a manual or pneumatic caulking gun (equipped with a telescopic piston) and carefully extrude the adhesive, avoiding air entrapment. After opening the package, use the adhesive within a short period. The optimal working temperature for both the surface and adhesive is between 15°C and 25°C.

Shaping and finishing must be done while the adhesive is still tacky. SiMP-Seal 650 can be painted over. Paint compatibility should be tested through preliminary trials. Caution is advised when using alcohol-based or alkyd resins, as they may interfere with the curing process of the adhesive and extend the drying time of the paint layer. The hardness and thickness of the paint layer can affect the elasticity of the adhesive and lead to paint cracking.

Do not allow curing in the presence of curing silicone sealants. Avoid contact with solvent-based cleaning agents during curing. When applying the adhesive, avoid air entrapment. Since this system cures with moisture, ensure sufficient exposure to air. Bonded parts may require additional holding or support during the curing stage.

Cleaning Instructions

Clean used tools with acetone or solvent. When the adhesive is uncured, it can be wiped off with paper or cloth. Once the adhesive has cured, it can only be removed mechanically. Avoid direct skin contact by wearing latex, rubber, or polyethylene gloves. If the adhesive contacts skin, remove immediately and wash with soap and water.

Storage Instructions

SiMP-Seal 650 can be stored for 12 months in its original (unopened) packaging at temperatures between 10°C and 25°C in a dry, cool place. The storage temperature should not exceed 25°C for extended periods. Keep away from damp areas, direct sunlight, and heat sources.