LOCTITE SI 5910 is a moisture-curing silicone sealant designed for bonding and sealing applications where flexibility and gap-filling performance are required. For composite fabricators, boat builders, and industrial assemblers who already source resins and gasket sealants from Thousands Technology, LOCTITE SI 5910 offers a complementary product for jobs that call for a flexible, atmosphere-cured silicone rather than a rigid flange sealant. This page summarizes the documented properties and application steps for this sealant to support sourcing decisions.
Typical Properties of LOCTITE SI 5910 (Uncured Material)
The properties below are documented for the uncured material and are useful when comparing LOCTITE SI 5910 against other silicone sealants for a given bonding or sealing application.
| Property | Typical Value |
|---|---|
| Specific Gravity @ 20 °C | 1.34 |
| Extrusion Rate (0.62 MPa, 15 s, 25 °C, Semco Cartridge) | 300 to 650 g/min |
| Flash Point | See SDS |
Directions for Using LOCTITE SI 5910 in Bonding Applications
Correct handling makes a measurable difference in how well a moisture-curing silicone performs once installed. The documented directions for use are as follows:
- For best performance, bond surfaces should be clean and free from grease before application.
- Moisture curing begins immediately after the product is exposed to the atmosphere, so parts to be assembled should be mated within a few minutes after dispensing.
- The bond should be allowed to cure, for example seven days, before subjecting the joint to heavy service loads.
- Excess material can be wiped away with non-polar solvents.
Working Time and Cure Considerations
Because moisture curing starts as soon as this sealant contacts air, assembly teams should plan their workflow so that parts are mated quickly after dispensing the product from the cartridge. Extended open time before mating can affect bond quality, particularly on larger joints where the full bead is not applied and closed in a single continuous step. Buyers scheduling production around this product should build the seven-day cure window into their handling and shipping plans before parts are exposed to full service loads.
Why Consistent Sourcing Matters
Composite and marine fabricators who use this sealant across multiple production runs benefit from consistent extrusion rate and cure behavior batch to batch. Variation in these properties can change bead consistency and cure timing on the shop floor, which is why buyers sourcing this sealant for repeat use should confirm supply continuity with their supplier before placing large orders.
Where to Source LOCTITE SI 5910
Thousands Technology provides supply chain resource support for recommended international brand products, including LOCTITE SI 5910, alongside a broader range of auxiliary agents and sealing products for composite and industrial assembly applications. For sealant performance standards and test methods referenced across the industry, buyers can review the applicable ASTM standards for adhesives and sealants.
Documentation
Safety data, flash point details, and handling precautions are provided in the manufacturer’s SDS. Buyers should request the current SDS and technical data sheet for LOCTITE SI 5910 before finalizing an order to confirm the specification matches their application.
FAQ: LOCTITE SI 5910 Sealant
What is LOCTITE SI 5910 used for?
It is used as a moisture-curing silicone sealant for bonding and sealing applications requiring flexibility and gap-filling.
How is it applied?
It is dispensed from a Semco cartridge onto clean, grease-free surfaces, and parts are mated within a few minutes since curing begins on exposure to air.
How long does it take to cure?
The bond should be allowed to cure, for example seven days, before it is subjected to heavy service loads.
How is excess material removed?
It can be wiped away with non-polar solvents before the product fully cures.
For pricing, SDS documentation, or supply chain support for LOCTITE SI 5910, contact Thousands Technology’s sourcing team to discuss your project requirements.
