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This section provides an overview for sealants as well as their applications and principles. Also, please take a look at the list of 1 sealant manufacturers and their company rankings.
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A sealant is a paste material used to fill gaps in buildings to keep them waterproof and airtight.
Sealants are usually stored in tubes or cartridges and are applied by attaching the container to a special gun. Sealants can be either one-component (all components are pre-mixed) or two-component (the two components are mixed together at the time of use).
One-component systems can be moisture cured, dry cured, or non-hardened, while two-component systems are mixed reaction cured. Various polymers such as silicone and polyurethane are used as raw materials.
Sealants are mainly used for repairing, maintaining confidentiality, and remodeling buildings. For example, silicone sealants are used in bathrooms and kitchens, and modified silicone sealants are used on exterior walls.
One way to prevent cracks in siding during remodeling is to fill the joints with a sealant in advance. Sealants are also used to secure printed circuit board components, seal connectors, and insulate electrical appliances.
Sealants are composed of raw material polymers, additives for curing, and additives for adjusting various properties, such as viscosity. Various types of raw polymers are used, such as silicone, modified silicone, polyurethane, and acrylic, depending on the curing mechanism.
The characteristics of sealants vary depending on the raw material polymer. For example, polyurethane-based sealants are characterized by extremely high durability and elasticity after curing. Upon release from the tube, the sealant is a soft paste.
One-component products cure when exposed to moisture in the air (moisture cure type) or when dried (dry cure type), while two-component products cure when the two pastes (base and hardener) are mixed together. There are three stages in the curing process of sealants:
This is the state in which the sealant does not string when touched by hand. The surface of the sealant has not hardened completely.
The surface has completely hardened. At this point, it is possible to paint over the sealant.
The inside of the sealant has hardened completely, and the strength of the sealant has been obtained.
The characteristics and installation methods of typical sealants (silicone, modified silicone, and urethane) are described below. When installing, the curing time must be observed, or the sealant may fail. Curing time differs depending on the type of sealant, so care should be taken.
Most commonly used in general households around water. It has excellent heat and cold resistance and cost performance. The disadvantage is that it cannot be painted over.
After the silicone-based coating is applied, 0.5 mm of the surface hardens in about 1 hour. After about 8 hours, 2 mm of the film is cured, and after about 24 hours, 3 mm of the film is fully cured.
At the film-hardening stage, the caulking can be used around water. In other words, baths and kitchens can be used approximately 8 hours after caulking.
This is a sealant used outdoors. Unlike silicone type, it can be painted on top.
About 2 hours after casting, 0.5 mm of the surface hardens. After about 24 hours, 2 mm of the film is cured, and after about 72 hours, 3 mm of the film is fully cured.
Although it takes time to fully cure, once the surface is cured, there is no need to worry even if it gets wet. Also, it is safe to apply water-based paint after about 1 hour and oil-based paint after about 12 hours.
The reason why there is such a time difference between water-based and oil-based is that when oil-based is used, the silicone-based must cure at least 70%.
Urethane is a sealant used outdoors. It has excellent adhesion and elasticity. Since it is weak against ultraviolet rays, it is used on the assumption that it will be painted when used outdoors.
0.5mm of the surface hardens in about 2 hours after it is cast out. About 3 days later, 2 mm of the film is cured, and about 7 days later, 3 mm of the film is fully cured.
This type requires even longer time than the modified silicone type. However, urethane sealants are used in large-scale construction sites such as mortar exterior walls and concrete caulking.
Ideally, all sealants should be used up in a single installation. However, there are cases when there is inevitably a surplus. If you have any excess sealant, first cut the tip of the sealant to the size of the installation area.
At this point, it is important to store the excess tip without discarding it. After the installation is finished, turn the stored tip upside down and insert it into the nozzle. At this time, insert the tip firmly to prevent air from entering and sealant from leaking through the gap. Finally, use tape to keep the nozzle in place, being careful of air and gaps.
Sealant hardens when exposed to air. Therefore, it is important to store the sealant properly so that it will not be unusable the next time it is installed.
*Including some distributors, etc.
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111 products found
111 products
CSJ Co., Ltd.
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Last viewed: 17 minutes ago
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■Summary Packaging with volatile rust prevention VpCI is a clean and dry rust prevention method that does not use desiccant or oil. Reduces backtra...
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Koyo Sangyo Co., Ltd.
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■A modified silicone-based conductive caulking agent. ・Excellent shielding properties. ・Excellent adhesion to metal, glass, wood, etc. ■Applicat...
Nishii Co., Ltd.
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Last viewed: 8 hours ago
We carry a wide selection of sealants, high-performance adhesives, and fillers. We will respond to your needs, such as using environmentally friend...
Fastener Industry Co., Ltd.
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Last viewed: 1 day ago
Loctite metal pipe sealant is a sealant that is filled into the gap between metal screws and forms a seal with a polymeric plastic that has excelle...
Furuto Industrial Co.,Ltd.
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Last viewed: 1 day ago
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Sealing material for airtight and waterproof gas pipe joints. Since no solvent is used, there is no need for dry curing or loss of filling volume. ...
Yagyu Shokai Co., Ltd.
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Last viewed: 11 hours ago
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5.0 Company Review
■Features ・When exposed to air at room temperature, it hardens and becomes a rubber-like elastic body. ・TB1209-100 has excellent heat resistance ...
Marukawa Shoten Co., Ltd.
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Last viewed: 5 hours ago
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Yagyu Shokai Co., Ltd.
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Last viewed: 1 day ago
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5.0 Company Review
■Features ・It is applied with a liquid sealant that can be applied at extremely low or ultra-high temperatures and hardens in 24 hours (72 hours w...
Bika Japan Co., Ltd.
100+ people viewing
Last viewed: 3 hours ago
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■Product description Diaphragm seals are used to protect instruments from aggressive, viscous, crystalline, corrosive, environmentally harmful or t...
Bika Japan Co., Ltd.
110+ people viewing
Last viewed: 3 hours ago
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■Product description Diaphragm seals are used to protect pressure measuring instruments in applications with difficult media. In diaphragm seal sys...
Kansai Patate Kako Co., Ltd.
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Last viewed: 8 hours ago
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4.0 Company Review
Elastic uretampate is a putty developed for outer wall material (siding board, concrete, mortar, etc.) for joints and cracks and chopping. ■ Use ...
Bika Japan Co., Ltd.
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Last viewed: 8 hours ago
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■Features ・All plastic design ・No metal used ・Threaded connection for direct mounting, also suitable for bonding (PVC-U) and welding (PP, PVDF) ...
Kansai Patate Kako Co., Ltd.
430+ people viewing
Last viewed: 11 hours ago
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4.0 Company Review
Repair ALC, PC, RC mortar, slate, wood joint stickers, cracks. ■ Characteristics ・ Because there is no plasticizer, there is no bleeding of plast...
3 models listed
Bika Japan Co., Ltd.
120+ people viewing
Last viewed: 3 hours ago
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■Product description Iarphragm seals are used to protect pressure measuring instruments from viscous, crystalline, corrosive, highly viscous, envir...
Kansai Patate Kako Co., Ltd.
330+ people viewing
Last viewed: 1 day ago
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4.0 Company Review
■ Characteristics ・ Because there is no plasticizer, the surface paint does not cause sticky and darkening due to bleed. ・ Because it is water -b...
2 models listed
Bika Japan Co., Ltd.
130+ people viewing
Last viewed: 8 hours ago
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■Features Open flange, internally welded diaphragm seal, contoured diaphragm bed ・Seal and fixing elements are not required ・Compact design ■App...
Kansai Patate Kako Co., Ltd.
290+ people viewing
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4.0 Company Review
Pair Seal CG-1 is a two-component polyalfide sealing material that does not contain organic solvents at all, and is a ceiling material that reacts ...
Bika Japan Co., Ltd.
110+ people viewing
Last viewed: 3 hours ago
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■Features ・All welded connection structure ・Choose from a variety of wetted part materials ・Suitable for high pressure ranges ■Applications ・A...
Kansai Patate Kako Co., Ltd.
420+ people viewing
Last viewed: 12 hours ago
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4.0 Company Review
A one -component ceiling material using a polymer polyisobutylene with extremely low water vapor transparency. It will be a tape -like product of S...
2 models listed
Bika Japan Co., Ltd.
130+ people viewing
Last viewed: 8 hours ago
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■Features ・Large volume internal diaphragm ・Special materials can be used ・Low temperature error due to large diaphragm diameter (low measuremen...
Kansai Patate Kako Co., Ltd.
280+ people viewing
Last viewed: 12 hours ago
Very Fast Response
4.0 Company Review
■ Product overview It is a ceiling material for secondary seals used for double glass. Pair Seal 2HD is a two -ingredient polyalfide ceiling materi...
Bika Japan Co., Ltd.
120+ people viewing
Last viewed: 3 hours ago
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■Features ・Compact size ・Oval capsule sensor with internal support for stabilization ・Can penetrate directly into the medium ■Applications ・Fl...
Kansai Patate Kako Co., Ltd.
480+ people viewing
Last viewed: 8 hours ago
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4.0 Company Review
A one -component ceiling agent using polymer polyisobutylene with extremely low water vapor transparency. ■ Use Primary sticker for double -layer ...
2 models listed
Bika Japan Co., Ltd.
100+ people viewing
Last viewed: 1 day ago
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■Features ・Diaphragm bed that follows the shape of the sandwich flange (cell type) and flat welded diaphragm ・All standard dimensions and nominal...
Kansai Patate Kako Co., Ltd.
290+ people viewing
Last viewed: 12 hours ago
Very Fast Response
4.0 Company Review
A one -component ceiling material using a polymer polyisobutylene with extremely low water vapor transparency. ■ Use Primary sticker for double gl...
Bika Japan Co., Ltd.
120+ people viewing
Last viewed: 12 hours ago
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■Features ・Extended and welded diaphragm with flange, contoured diaphragm bed ・Applicable to all standard dimensions and nominal diameters ・Spec...
Edec Co., Ltd.
300+ people viewing
Last viewed: 1 day ago
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Silicone -based heat -resistant shirings, high -temperature ceramic -silicone type heat -resistant seal agents, and glass -based high heat -resista...
4 models listed
Daizo Co., Ltd.
70+ people viewing
Last viewed: 18 hours ago
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■Product overview NB3040 is a two-component epoxy adhesive newly developed as a halogen-compatible product for the oil seal of NB3000. It has excel...
Daizo Co., Ltd.
60+ people viewing
Last viewed: 3 hours ago
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■Product overview NB3041B is a one-component epoxy adhesive newly developed as a halogen-compatible product for the oil seal of NB3000. It has exce...
Kokugo Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
Silicone 1-component RTV rubber KE-42-T transparent 100g ■Features ・When silicone one-component RTV rubber is extruded from a container such as a...
