LG912 Neutral Sealant

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  • Estimated Delivery:May 05 - May 09

We focus on the production of metal cleaning agents, neutral rust removers, and metal coating agents. The metals we can handle include iron parts, aluminum parts, cast aluminum, galvanized parts, magnesium-plated parts, etc.
Product description

ItemDetails
Product NameLG912 Neutral Sealing Agent
Product OverviewLG912 Neutral Sealing Agent is a water-based sealer based on eco-friendly organic corrosion inhibition technology, specially designed for long‑lasting and stable anti-tarnish protection of copper, brass, bronze and other products. Under near-neutral mild conditions, it forms an ultra-thin, dense, transparent monomolecular complex protective film on thoroughly cleaned copper surfaces through chemical adsorption and self-assembly. The film effectively blocks corrosive media such as oxygen, moisture, sulfides (H₂S, SO₂) and fingerprints in the air, preventing discoloration, blackening and greening caused by oxidation and sulfuration, while perfectly preserving the original color and luster of metal to achieve “invisible” protection.
Chemical PropertiesAppearance: Milky white or transparent liquid
pH: 7±1
Product Features1.Excellent anti-tarnish performance: Outstanding resistance to sulfuration and oxidation, significantly prolongs the original color retention of copper parts, and passes neutral salt spray and humidity tests.
2.Neutral & safe: Working solution is neutral, zero corrosion to copper substrate, no change in dimensions or mechanical properties, no risk of hydrogen embrittlement.
3.Invisible ultra-thin coating: Nanoscale film, fully transparent, no effect on appearance, texture, electrical conductivity or solderability.
4.Excellent durability & adhesion: Bonded with substrate via chemical bonds, strong adhesion, wear and wipe resistant, long‑lasting protection.
5.Eco-friendly & easy operation: Water-based formula, free of chromate, phosphate, nitrite and toxic substances, no irritating odor, operable at room temperature by immersion.
6.Wide compatibility: Suitable for pure copper, brass, bronze and other copper alloys, friendly to subsequent processes such as mild heating and packaging.
Technical ParameterspH: 7±1
Temperature: Room temperature – 40°C
Treatment time: Spray 40–120 seconds, immersion 2–3 minutes
Make-up concentration: 10–15%
Application ScopeMaterials: Pure copper (red copper), brass (H62, H65 etc.), bronze, cupronickel and other copper alloys.
Workpieces: Electronic and electrical components, connectors, heat sinks, jewelry, handicrafts, high-grade plumbing parts, musical instruments, medals, copper architectural decorations etc.
Processes: Immersion, spray, brushing, wiping.
Stages: Final protection after cleaning, polishing, electroplating; short-term rust prevention between processes; ultimate protection before packaging.
Standard Process FlowThorough Cleaning → Complete Rinsing → Sealing Treatment → Mild Rinsing → Drying
1.Pretreatment: Workpieces must be fully cleaned and deoxidized to ensure absolutely clean surface free of oil, oxide, fingerprints and chemical residue. Rinse thoroughly with running water; final rinse with deionized or pure water is recommended.
2.Sealing treatment (core step): Immerse drained workpieces fully in working solution for 1–3 minutes. Spray or brush for large parts.
3.Mild rinsing (optional but recommended): Quick rinse in clean running pure water for 2–5 seconds to remove excess physical adsorbed liquid.
4.Drying: Dry immediately with clean compressed air or oven below 80°C until no wet marks and original luster restored.
Notes & Safety1.PPE: Wear protective gloves; avoid prolonged skin contact even though mild.
2.Process discipline: Inadequate pretreatment leads to invalid sealing. Avoid excessive carry‑over of previous bath residues; check bath cleanliness regularly. Dry timely after treatment.
3.Film characteristics: Molecular-level protective film, not resistant to strong acid, alkali or mechanical scratching. Removable by ethanol, acetone wiping or mild polishing.
4.Wastewater treatment: Long bath life but high COD; collect waste liquid and treat by professional wastewater system.
Storage & PackagingPackaging: 25kg/plastic drum, 1000kg/plastic drum
Storage: Store in cool and ventilated area, away from direct sunlight and high temperature
Shelf life: 12 months in unopened original packaging

Two-in-one pre-treatment standard process

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