共和ゴム Product Lineup

The "Joint Form Norostopper" is a type of formwork material designed to prevent the leakage of mortar water during large-scale repairs and replacements of floor slabs. It employs a semi-customized approach to determine the appropriate stopper size based on the type and size of the PC floor slab used in the construction. It prevents distortion of the stopper and shear separation of the installation surface due to load and level adjustments during slab installation, and it also accommodates unevenness. It thoroughly prevents the leakage of mortar water. 【Features】 ■ Proposes suitable sizes ■ Prevents mortar water from escaping ■ Semi-customized approach ■ Prevents distortion of the stopper and shear separation of the installation surface, accommodating unevenness *For more details, please refer to the PDF document or feel free to contact us.

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The "MAT" is a lightweight, compact sports field sign that can be easily folded and carried. It is made of durable, flame-resistant materials that are resistant to breakage. It can be reused, keeping the total cost low. Additionally, even if the banner changes, you can simply replace the banner section with Velcro. The main body can be reused as is. 【Features】 ■ Size can be customized ■ Lightweight and compact ■ Can be connected to accommodate a wide range of sizes ■ Reusable ■ Soft, making it safe even if bumped into *For more details, please refer to the PDF document or feel free to contact us.

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"Mamoru-kun" is a rust prevention cap for bolts and nuts that protects them from wind, rain, and mud, preventing rust. It completely covers the bolts and nuts, providing strong waterproofing and dustproofing, while still allowing for visual inspection through its transparent material. Despite its glass-like transparency, it boasts impact resistance over 250 times that of glass. With high water tightness, it prevents deterioration of bolt structures due to rust, facilitates maintenance and inspection work, and contributes to the longevity of infrastructure. 【Features】 ■ Prevents rust ■ Visible interior ■ No filler required ■ Waterproof and dustproof ■ Allows visual inspection while installed *For more details, please refer to the PDF document or feel free to contact us.

• bolt

The "Joint Form" is a product that allows you to complete the tedious joint filling work in just a few minutes. No cleaning, maintenance, or protection of the joint area is required. Joint filling and curb installation can be completed simultaneously. Additionally, the work time is not affected by size or shape. Please use it for joint construction of various blocks such as pedestrian and vehicle boundary, central separation, and property boundary. 【Features】 ■ Significant labor savings and reduced construction time ■ Uniform finish ■ No filling defects ■ Tedious joint filling work completed in just a few minutes ■ No cleaning, maintenance, or protection of the joint area required *For more details, please refer to the PDF document or feel free to contact us.

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"High specific gravity rubber" is a product that achieves a weight of 2.80 without using metals such as iron powder, and it maintains excellent weather resistance, ozone resistance, and heat resistance. The specific gravity is more than twice that of regular rubber. It has a proven track record as a vibration-damping and vibration-isolating material. Additionally, this product was developed as a molding material, allowing for mold shaping in various forms. Please feel free to contact us. 【Features】 ■ Environmentally friendly ■ More than twice the specific gravity of regular rubber ■ Excellent weather resistance ■ Excellent ozone resistance ■ Excellent heat resistance *For more details, please refer to the PDF document or feel free to contact us.

• Rubber

"Super Soft Rubber" is a type of rubber made through direct pressure molding using molds. It is primarily composed of EPDM, featuring excellent weather resistance, heat resistance, and chemical resistance, while also considering the design for compression set. Due to its softness, it has a proven track record as a waterproofing material and cushioning material. With its excellent compression change rate, it experiences minimal sagging and can withstand prolonged compression use. Additionally, it allows for multi-layer integrated molding of different hardness materials, so please feel free to contact us. 【Features】 ■ Excellent weather resistance ■ Excellent heat resistance ■ Excellent chemical resistance ■ Minimal sagging ■ Withstands prolonged compression use *For more details, please refer to the catalog or feel free to contact us.

• Rubber bands and strings

Our company performs multilayer integrated molding using various materials and molds. It is possible to integrally mold a very soft, highly compressible ultra-soft rubber on the inside and a high-hardness rubber that is strong and durable on the outside. Additionally, we can achieve two-layer integrated molding of synthetic rubbers with different polarities, such as SBR and EPDM, as well as three-layer integrated molding of water-swelling non-woven fabrics, metals, hard rubber, and soft rubber. 【Features】 ■ Use of molds ■ Possible multilayer integrated molding of products with different hardness ■ Possible multilayer integrated molding of different materials ■ Support for three-layer molding *For more details, please refer to the PDF materials or feel free to contact us.

• Rubber

The "Any Joint" uses water-swelling non-woven fabric and has excellent water-stopping performance. Since it does not use rubber rings, there is no need for lubricants, and it can be connected with a single touch, significantly improving workability compared to conventional products. Additionally, it can be backfilled immediately. It has flame retardancy equivalent to UL standard V-2 level, ensuring safety. 【Features】 ■ Uses water-swelling non-woven fabric ■ Excellent water-stopping performance ■ No lubricants required ■ Significantly improved workability ■ Compatible with all FEP pipes *For more details, please refer to the catalog or feel free to contact us.

• Valves and fittings

The "water-expanding non-woven fabric" is a non-woven fabric that incorporates a polymer primarily composed of sodium polyacrylate, mixed with high water-absorbent and high moisture-absorbing fibers to provide water absorption properties. It quickly absorbs water due to its large surface area and does not easily release water even under pressure. With excellent moisture absorption and desorption properties, its capability is about twice that of silica gel. Additionally, it has strong light resistance, so there is no decrease in water absorption performance due to light exposure. It has high deodorizing properties against ammonia, allowing for repeated use through sun drying. There is no significant decline in performance even after repeated use. 【Features】 ■ Rapid water absorption speed ■ Excellent moisture absorption and desorption properties ■ Reusable ■ Excellent light resistance ■ High deodorizing performance *For more details, please refer to the catalog or feel free to contact us.

• Nonwoven

"Water-Expanding Non-Woven Fabric" is a waterproof material that incorporates high water-absorbent and high moisture-absorbing fibers into non-woven fabric (polyester fibers) to provide water absorption capabilities. It has approximately twice the moisture absorption capacity of silica gel and quickly absorbs water due to its large surface area. Even under pressure, it does not easily release water. Additionally, it has a high deodorizing effect against ammonia, can be reused through sun-drying, and does not experience significant performance degradation even after repeated water absorption and moisture absorption. 【Features】 ■ High water absorption ■ High moisture absorption ■ Flame retardant ■ Heat resistant ■ Reusable *For more details, please refer to the PDF document or feel free to contact us.

• Pipe Fittings
• Sealing

The "Any Joint (R)" uses water-expandable non-woven fabric and is a flame-retardant product with excellent waterproof performance. We offer the "Type A" that connects with epoxy resin, and the "Type B" that connects with a bushing and bell mouth. Additionally, there are joints available that do not require opening mold formation (box cutting) during handhole molding. Please feel free to contact us. 【Features】 ■ Compatible with all FEP pipes ■ Significantly improved workability ■ Reliable waterproofing ■ No lubricant required ■ Flame-retardant specification *For more details, please refer to the PDF materials or feel free to contact us.

• Pipe Fittings

The materials are loaded into the mold for rubber molding, and they are vulcanized and bonded together within the mold. The bonding strength is significantly higher than that of conventional adhesives.

• Rubber

Achieved a high specific gravity of 2.85 without using any environmentally harmful substances such as heavy metals like lead (RoHS compliant)! High specific gravity rubber that maintains excellent weather resistance, ozone resistance, and heat resistance.

• Rubber

"Super Soft Rubber" achieves excellent softness with a Shore A hardness of "3-5 degrees." Developed as a molding material, it can be molded into various shapes. It has very high deformability (compliance) towards the counterpart, demonstrating excellent sealing effectiveness. Additionally, we offer hardness options of 5 degrees, 10 degrees, and 20 degrees, and we can accommodate customer requests. [Features] ■ Softness with a hardness of "5" ■ Can be molded into various shapes ■ Various hardness options available ■ Excellent "sealability" ■ Outstanding "performance" *For more details, please refer to the PDF document or feel free to contact us.

• Rubber