[Free Sample Gift] Comparison of Rubber Sponges: NR, NBR, CR, EPDM

Various types of rubber-based sponges, commonly known as rubber sponges, have been categorized by their applications, usage environments, and excellent performance (strength, waterproofing, heat resistance, chemical resistance, etc.).

NR series (Natural Rubber) Rubber Sponge - Characteristics Has the most rubber-like elasticity. Good mechanical strength and abrasion resistance. Weak against heat and ultraviolet rays. - Main Applications Various tires, footwear, hoses, belts, vibration-damping rubber, industrial gaskets, etc. NBR series (Nitrile Rubber) - Characteristics Oil resistance is its greatest feature. Excellent gas permeability. Poor weather resistance and cold resistance. - Main Applications Oil seals, gaskets, packing, oil-resistant hoses, etc. CR series (Chloroprene Rubber) - Characteristics Has average properties such as weather resistance, oil resistance, and heat resistance. Excellent flame retardancy. - Main Applications Wire insulation, automotive parts, belts and hoses, window frame rubber, adhesives, etc. SR series (Silicone Rubber) - Characteristics High heat resistance, cold resistance, and weather resistance. Excellent electrical properties and non-stickiness. Physiologically safe material. Mechanical strength is inferior. - Main Applications Food-related, medical device-related packing, gaskets, industrial rolls, etc. EPDM series (Ethylene Propylene Rubber) - Characteristics Excellent ozone resistance, weather resistance, chemical resistance, heat resistance, and cold resistance. - Main Applications Window frames, automotive parts, electrical wires, outdoor cushioning materials, and shock-absorbing rubber materials, etc.

• Rubber

It is a clean polyolefin-based special foam with low outgassing that does not use chemical blowing agents. It is recommended for precision equipment and measures against sick house syndrome.

Due to the supercritical nitrogen gas foaming method, the foam has very low outgassing of substances such as siloxane, ammonia, formaldehyde, and sulfur, making it safe for use in measures against sick house syndrome and in precision equipment such as electronic circuits.

• Composite Materials

For anything related to sponges (foam), please leave it to Konan Co., Ltd.

Konan Co., Ltd. processes and sells various industrial materials, industrial supplies, and lifestyle-related products, primarily using sponge (foam) and other materials, and is making daily progress to be of service in a wide range of industries. Moving forward, we aim to become a company that can create better "monozukuri" (manufacturing) together with our customers by leveraging the technology and experience accumulated since our founding, while also providing various proposals through new ideas and creativity. 【Business Activities】 ○ Processing and sales of sponge (rubber, polyethylene, urethane) in general, rubber sheets, films, double-sided tape, etc. ○ Sales of various extruded and molded products, among others. For more details, please contact us or download the catalog.

• Rubber
• Composite Materials

Introducing sound-absorbing urethane foam. *Sample sponge book available.

Due to the special formulation of the urethane foam, it has sound-absorbing properties superior to general-purpose urethane foam. There are sound-absorbing types (general type, coated, flame-retardant) and vibration-damping types available. Manufacturer Inoac Corporation Representative part numbers F-2/F-4/F-6/F-9 *For more details, please refer to the PDF materials or feel free to contact us.

• Engine parts
• Rubber
• Cushioning material

Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

The sheets used at construction sites require various considerations, including strength, workability, transportability, work burden, and safety. What we have developed is the Hyper CLT sheet (NETIS number: TH-250021-A). The Hyper CLT sheet is not just aimed at being a new "wooden sheet." What we value is that it can truly be used on-site and that we can make proposals based on evidence rather than intuition. To achieve this, we have focused on the feedback and usability obtained from actual construction sites while advancing the acquisition and verification of various data through collaboration with universities. Points that may be difficult to see in solo corporate development have been organized from a more objective perspective by incorporating university expertise, which has been reflected in product development. It needs to be evaluated comprehensively, considering weight, maneuverability, burden during installation, consideration for the surrounding environment, and ease of introduction. In this context, the Hyper CLT sheet (NETIS number: TH-250021-A) expands possibilities as a new option based on practical insights gained on-site and data support through collaboration with universities.

Fukuda's new flagship model. - Masterless type (FLA-0200 series) - General type (FLA-0201 series) Two models of air leak testers. With the mastering correction function, high-precision measurements can be achieved in a short time. Please take a look at the catalog.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.