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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. Here are the top-ranked sealant companies as of August, 2026: 1.SCOTT Sports SA..
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Categories Related to Sealants
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.
Sort by Features
Ranking as of August 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SCOTT Sports SA. |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the sealant page as of August 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
210 products found - Page 2
210 products - Page 2
Kansai Patate Kako Co., Ltd.
300+ people viewing
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
K’s Material Co., Ltd.
440+ people viewing
Last viewed: 21 hours ago
4 models listed
Wakai Sangyo Co., Ltd.
160+ people viewing
Last viewed: 1 day ago
1-component modified silicone sealant. Non-bleed type ■Features ・A medium-modulus type usable for many purposes ・A non-bleed type with excellent...
Yoshikawa Shoko Co., Ltd.
360+ people viewing
Last viewed: 14 hours ago
Acrylic sealant #2000K lightweight type blends well with exterior paint materials and is easy to use. Since it is a lightweight type, you don't hav...
Takao Co., Ltd.
320+ people viewing
Last viewed: 21 hours ago
■Excellent adhesion to a wide range of materials such as PVC steel plates ・Cracks in interior and exterior joints of general buildings ・Cracks in...
Wakai Sangyo Co., Ltd.
110+ people viewing
Last viewed: 17 hours ago
1-component modified silicone sealant ■Features ・Good adhesion to various materials such as PVC-coated steel sheet and stainless steel ・A waterp...
Takao Co., Ltd.
250+ people viewing
Last viewed: 5 hours ago
acrylic caulk ■Applications ・Joints between ALC panels ・Glut treatment for disposable base materials such as inorganic boards and plywood ・Seali...
Wakai Sangyo Co., Ltd.
250+ people viewing
Last viewed: 17 hours ago
1-component modified silicone sealant ■Features ・Good adhesion to various materials such as PVC-coated steel sheet and stainless steel ・A waterp...
Asahi Kagakusei Co., Ltd.
590+ people viewing
Last viewed: 15 hours ago
■Summary Hot melt adhesives are also used in aluminum tape, craft tape, medical tape, sticker labels, disposable diapers, etc. Since it does not co...
Kansai Patate Kako Co., Ltd.
410+ people viewing
Last viewed: 13 hours ago
■ 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
Takao Co., Ltd.
340+ people viewing
Last viewed: 6 hours ago
About the product ■Excellent adhesion to a wide range of materials such as PVC steel plates ・Cracks in interior and exterior joints of general bui...
Yoshikawa Shoko Co., Ltd.
500+ people viewing
SU sealant, a polyurethane-based quick-drying sealant, has quick surface hardening and excellent deep hardening properties, contributing to shorten...
Takao Co., Ltd.
250+ people viewing
Last viewed: 23 hours ago
■About the product Since it is an alcohol-curing type, it will not cause solvent cracks in plastic. It is the first translucent color in Japan. Eve...
Wakai Sangyo Co., Ltd.
230+ people viewing
1-component silicone sealant ■Features ・Excellent waterproofing performance. Excellent weather, heat, and cold resistance, retaining rubber-like ...
Wakai Sangyo Co., Ltd.
150+ people viewing
Last viewed: 1 day ago
1-component silicone sealant ■Features ・Excellent waterproofing performance. Excellent weather, heat, and cold resistance, retaining rubber-like ...
Takao Co., Ltd.
240+ people viewing
Last viewed: 2 hours ago
■Applications ・High-performance sealing material that can be used for both the interior and exterior of buildings ・For use around water ・Water a...
Wakai Sangyo Co., Ltd.
320+ people viewing
Last viewed: 1 day ago
1-component silicone sealant ■Features ・Excellent waterproofing performance. Excellent weather, heat, and cold resistance, retaining rubber-like ...
Asahi Kagakusei Co., Ltd.
370+ people viewing
Last viewed: 7 hours ago
■Summary ・"Asahi Tack" is used for various parts such as headlamps, floor mats, air conditioner ducts, door moldings, and seats. - High performanc...
Kansai Patate Kako Co., Ltd.
940+ people viewing
Last viewed: 7 hours ago
Elastic uretampate is a putty developed for outer wall material (siding board, concrete, mortar, etc.) for joints and cracks and chopping. ■ Use ...
Wakai Sangyo Co., Ltd.
280+ people viewing
Last viewed: 14 hours ago
1-component polyurethane sealant ■Features ・Formaldehyde-free, xylene-free, toluene-free type ・Non-bleed type that does not stain paint ・A one-...
Yoshikawa Shoko Co., Ltd.
370+ people viewing
Last viewed: 19 hours ago
Polyurethane sealant Hiurethane can be used in a wide range of joints in general buildings. Hirethane NB is less likely to contaminate painted mate...
House Depot Japan Co., Ltd.
230+ people viewing
■Main body and caulking color matching table ・Wood beige...Yellow beige ・Wood brown...brown ・Wood dark brown...dark brown ・Off white...white
Yoshikawa Shoko Co., Ltd.
620+ people viewing
Last viewed: 1 day ago
SU sealant, a polyurethane-based quick-drying sealant, has quick surface hardening and excellent deep hardening properties, contributing to shorten...
House Depot Japan Co., Ltd.
240+ people viewing
Last viewed: 12 hours ago
■Main body and caulking color matching table ・Wood beige...Yellow beige ・Wood brown...brown ・Wood dark brown...dark brown ・Off white...white
Yoshikawa Shoko Co., Ltd.
330+ people viewing
Polyurethane sealant Hiurethane can be used in a wide range of joints in general buildings. Japan Sealant Materials Industry Association JSIA F re...
Yoshikawa Shoko Co., Ltd.
350+ people viewing
Polyurethane sealants are less likely to contaminate painted materials. Ideal for joint treatment before painting. Japan Sealant Materials Industr...
Yoshikawa Shoko Co., Ltd.
410+ people viewing
Polyurethane sealants are less likely to contaminate painted materials. Ideal for joint treatment before painting. Japan Sealant Materials Industr...
