ThreeBond 1121 solvent-free non-drying liquid gasket (gray paste)

Product Overview

ThreeBond 1121It is a high-performance product based on modified polyester resin.Non-drying, solvent-free paste liquid gasket (sealant)。

This product does not contain any volatile organic solvents, so it will not age, harden or shrink over time.. Due to its unique "non-drying" properties (it does not solidify after coating), the sealed mechanical parts can be easily disassembled during later maintenance, significantly reducing maintenance costs and cleaning hours.. At the same time, it has no corrosive effect on rubber and plastic, and is especially suitable for industrial sealing conditions that require frequent disassembly and maintenance, large joint area flanges, and use with solid gaskets.。

Core advantages and features

• Completely non-drying and easy to disassemble:After assembly, it remains slightly sticky and does not harden. It is extremely easy to disassemble, assemble, and repair later without damaging metal joint surfaces and precision parts.。

• 100% solvent-free and environmentally friendly formula:Contains no volatile organic solvents, no pungent odor (nearly tasteless), and will not cause aging or cracking after long-term use.。

• Excellent compatibility:It has no corrosion or aging effects on various engineering plastics and rubber, and can be directly coated on the surface of solid gaskets (such as asbestos, paper gaskets, rubber gaskets) to be used as an auxiliary sealing enhancer.。

• Excellent gasoline and oil resistance:Specially developed for fuel and oil circuit systems, it is resistant to infiltration by automobile gasoline and lubricating oil media and has outstanding tolerance.。

• High voltage resistance and thermal shock resistance:Normal temperature flange pressure resistance up to90 kg/cm², the pressure resistance still remains after the -40℃ ~ 100℃ hot and cold cycle test.70 kg/cm²。

• Good coating performance on large areas:The paste has a moderate texture and has excellent ductility on large-area joints, ship hatch covers and large-sized equipment flanges.。

[Basic physical properties]

[Technical tolerance and experimental data]

1. Flange pressure resistance test (JIS-K-2213 turbine oil medium)

• Normal temperature and pressure resistance: 90 kg/cm²

• 80℃ pressure resistance: 70 kg/cm²

• 150℃ pressure resistance: 65 kg/cm²

• Pressure resistance after hot and cold cycles:After alternating cycles from -40℃ (2h) to 100℃ (3h), the flange pressure resistance remains at70 kg/cm²。

2. Chemical resistance (JIS-K-6820 test standard)

• Water resistance (90~95℃ circulating water immersion):Weight change rate is only -5.5%

• Oil resistance (soaked in No. 2 rubber lubricating oil at 95~100℃ for 24 hours):Weight change rate is only +1.7%

• Gasoline resistance (soaked in No. 1 automotive gasoline at 45~50℃ for 24 hours):Exhibits excellent resistance to fuel swelling and dissolution。

[Typical application scenarios]

1. Ships and heavy machinery:Marine engine cylinder side cover, engine room inspection side cover, valve chamber cover, ship hatch cover (Hatch-covers) seal。

2. Equipment that requires regular disassembly and maintenance:Various types of gearbox covers, reducer joints, drain cocks and filter joints that require periodic opening and inspection。

3. Large area joint surface:Large flat flange seals for various large machine tools and casting boxes。

4. Solid gasket surface auxiliary sealing:Use with various metal gaskets, cork gaskets, and rubber sealing gaskets to fill gasket micropores and tiny scratches to completely eliminate leakage.。

[Recommended usage methods and construction precautions]

1. Joint surface cleaning:Please thoroughly remove old sealant residue, oil, dust and moisture from the joint surface before use.。

2. Even coating:Use a brush, oil bottle or special glue gun (ThreeBond Flow Gun) toEven, thin layer coatingOn the surface of one side of the flange。

3. Instant fastening:There is no need to wait for drying after coating is completed. It is recommended toWithin 2 ~ 4 minutesAlign and tighten the bolts。

4. Material storage:If the filler settles slightly during storage, please stir evenly before use.; Please close the lid/tube cap tightly immediately after use to prevent foreign matter from getting mixed in.。