ThreeBond 1215 one-component room temperature curing gray silicone rubber liquid gasket (non-flowing type)
Product Overview
ThreeBond 1215 is a one-component gray liquid gasket (silicone sealant) based on silicone rubber.. This product can spontaneously react and solidify at room temperature after contact with moisture in the air, without adding curing agents, accelerators or heating.. During the hardening process, its bonding strength continues to increase, eventually transforming into a rubber-like solid with excellent elasticity.。
The elastomer formed after curing has excellent cold resistance, heat resistance and weather resistance.-60℃ to +250℃It can maintain its original stable physical properties and sealing state for a long time in an extremely wide temperature range.. The product adopts a solvent-free formula, has almost no shrinkage in volume, and has good anti-sag properties (Non-sag). It is especially suitable for sealing various flange surfaces, large-area mating surfaces and large gaps. It can also be used in conjunction with solid gaskets.。
Core advantages and features
Ultra-wide temperature-resistant working conditions (-60℃ ~ +250℃):It has excellent high and low temperature resistance and weather resistance, and will not harden or crack when exposed to harsh environments for a long time.。
Solvent-free and extremely low shrinkage:100% solvent-free, with almost no volume shrinkage during curing and film formation, ensuring the sealing of the joint surface。
Thixotropic anti-sag (Non-sag):It has non-flowing characteristics and good formability during construction. It is very suitable for coating on vertical flange surfaces, side elevations and large gaps.。
Extremely high flange pressure resistance performance:The withstand voltage at normal temperature, 80℃ and 150℃ all reaches100 kg/cm² or more; After being subjected to hot and cold cycle shock (-40℃ to +100℃), the withstand voltage remains at100 kg/cm² or more。
Excellent chemical resistance:After temperature resistance immersion testing, it maintains a low mass change rate (-4.2% ~ +3.5%) for hot water (90~95℃), engine oil and lubricating oil (95~100℃) and gasoline (45~50℃)。
Solid Gasket Composite Compatible with:It can be used alone as a liquid gasket, or it can be coated on the surface of solid gaskets such as metal and asbestos as an auxiliary sealing layer.。
Basic physical properties and technical specifications
| Inspection items | Technical parameters | Test Standards/Remarks PDF |
| base material | One-component silicone rubber (Silicone Rubber) | Moisture room temperature curing type |
| Appearance before curing | Gray paste (Grey) | Non-sag |
| Viscosity (25℃) | 70.0 Pa·s | Moderate thixotropy, easy to apply glue |
| Specific gravity (25℃) | 1.55 | High specific gravity dense packing |
| Appearance after curing | Gray rubber elastomer | — |
| Hardness (JIS) | 45 Shore A | High tear resistance elastomer |
| tensile strength | 15 kg/cm² | — |
| Elongation at break | 320% | Has good vibration absorption and deformation buffering capabilities |
| Shear strength (aluminum plate, 25℃) | 8 kg/cm² | Al plates |
| ignition point/flash point | None | Non-flammable dangerous goods |
| Packaging specifications | 250g (in aluminum tube), 333ml (in cartridge), 20kg (in bucket) | Portable maintenance equipment and complete mass production specifications |
| shelf life | 250g package is 12 months; 333ml and 20kg package is 6 months | Unopened, store in a cool and dry place at 10 ~ 25℃ |
Technical tolerance and experimental data
1. Pressure resistance and thermal shock resistance test (JIS K6820 test method)
Normal temperature and pressure resistance: ≥ 100 kg/cm²
80℃ high temperature pressure resistance: ≥ 100 kg/cm²
150℃ high temperature pressure resistance: ≥ 100 kg/cm²
Pressure resistance after alternating hot and cold cycles: ≥ 100 kg/cm²(The flange is frozen at -40℃ for 2 hours, then heated at +100℃ for 3 hours, and tested after cooling)。
2. Chemical stability against media (JIS K6820 test piece immersion test)
Water resistance (immersed in water at 90~95℃ for 24 hours):The mass change rate is only -4.2%
Oil resistance (95~100℃ No. 2 rubber swelling oil soaked for 24h):Mass change rate only +3.5%
Gasoline resistance (soaked in JIS K2202 No. 1 gasoline for 24 hours at 45~50℃):The mass change rate is only -3.0%
Typical application areas
Engine and powertrain:Sealing surfaces of automobile and motorcycle engine oil pans, gearbox housings, clutch covers, water pumps and timing sprocket covers, etc.。
Large area wide flange:Large-size joint surfaces of various general machinery and mating surface seals of casting boxes。
Filling of large gaps:Suitable for joint gap sealing where the fit gap is too large or the machined surface has micro-tolerance defects。
Solid gasket assisted reinforcement:With pre-cut solid gaskets (paper gaskets, rubber gaskets, metal gaskets) double-sided coating to enhance sealing and leakage-proof reliability。
Construction methods and usage precautions
Clean the surface:Before gluing, remove oil, carbon deposits, old glue residue and moisture from the joint surface, and keep the surface dry.。
Instant assembly:After the tape coating is completed,It is recommended to align and tighten components immediately。
Avoid pits in substrate:This product pairsCopper and copper alloys have a tendency to corrode, should be avoided to be used directly on the copper substrate contact surface;Cannot be used for pipeline piping (Pipes) sealing;Not for use in medical implants。
Electrical insulation:This product is a non-conductive insulating material. Do not apply it on electrical contacts or conductive contact surfaces.。
Working environment and storage:Maintain good ventilation in the construction site;Must be used after useTighten the cap, stored in a sealed, dry environment at 10 ~ 25°C away from light and low humidity.。
