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Products with superior corrosion proofing

Corrosion resistance provided by rubber products is integral to a wide variety of fields.
Rubber linings with superior corrosion resistance properties are used in the interiors of storage tanks, reaction vessels and piping for acids, alkalis and other chemicals in the soda industry, chemical plants, water treatment (pure water production, waste water treatment), fuel gas desulfurization, steel manufacturing, power industry, food industry and more.
Rubber gaskets are used to hold ion exchange membranes in the soda industry and are excellent for protecting against corrosion from chlorine, sodium hypochlorite, sodium hydroxide, etc.
In addition, compression diaphragms are also used for solid-liquid separation in wastewater treatment facilities for general chemical plants.

What are rubber linings?

Rubber linings are a type of "superior", "stable" and "economical" corrosion resistance material used in high temperature, high concentration, high pressure, vacuum and various other conditions in chemical plants, water purification equipment, the soda industry, fuel gas desulfurization equipment, power, mining, plating, vehicle, steel, food and all other industrial fields where corrosion and abrasion are issues.

[ Rubber lining characteristics ]

Rubber linings have the below characteristics.
Superior corrosion resistance
  Rubber is electrochemically inert, and has corrosion resistant properties in a wide range of inorganic and organic compounds.
There are also synthetic rubbers which can resist chemicals with strong oxidizing properties and organic solvents.
Superior abrasion resistance
  Flexible rubbers with high elasticity have superior abrasion resistance properties for liquids which contain solid content.
High strength adhesion with underlying metals
  Appropriate selection of adhesives can produce adhesive strength which is so strong that the rubber layer can break.
Highly reliable for construction
  In general, unvulcanized rubber which has highly flexible plasticity, is affixed to a metal body, it can be affixed securely for even complex shapes.
Defects can be reliably detected
  Pinholes, cracks and other defects can be easily and reliably detected through electrical methods (pinhole inspection).
Hard rubber can be machine processed
  When using hard rubber, machine processing can be used to reliably produce lining surface dimensions.
On-site lining construction can be carried out at the tank installation site
  Lining construction work is possible at the installation site for large tanks and there are no restrictions on equipment dimensions for the construction.
Linings can also be applied to concrete
  Rubber linings can be applied to not just metal, but also concrete.

Our company's rubber linings

For our company's linings we provide customers with total detailed services from material selection and equipment design to construction, installation and post-use maintenance and other after-service all based on the high level of technical expertise and knowhow cultivated by our company over 80 years of rich experience.
In addition, we don't simply provide customers with all of these services related to [lining characteristics] we can also diagnose and evaluate the lifespan of currently installed linings (onsite inspection, evaluation based on sampling from currently installed lining), and process (industrial waste and recycle product separation and disposal after rubber removal) rubber unnecessary rubber lining products (containers) etc.

Our company's leading rubber lining materials

Our company has over 20 lining materials including technology introduced by AJINOMOTO Co.,Inc.
Only leading materials are listed.

Material Material no. Main applications
Hard rubber S-64 For standard chemicals, for chlorine resistance
Hard rubber A-1054 Hard rubber which has outstanding heat resistance and hydrochloric acid resistance
We have proven results at concentration 20% and temperature of 120°C
Hard rubber A-2172 Hard rubber which has outstanding steam diffusion resistance
Butyl rubber S-05 For heat resistance, for hydrofluoric acid resistance, for high hydrofluoric acid
Butyl rubber S-13 For heat resistance, for high hydrofluoric acid
Our specialist staff can quickly respond to any questions or issues related to material selection, so contact us for a consultation.

Malaysia production base

Showa Rubber (Malaysia) Sdn.Bhd. (SRM), our sibling company, is located in Johor, Malaysia. The company also possesses the largest vulcanizer (φ4.5m×15mL) of any ASEAN country and provides high quality rubber lining products to ASEAN countries as well as Japan. We also have Japanese staff at the site, so please feel free to contact us for a consultation.

What is a filter press?

Filtration is using cloth or paper to separate "solids and liquids". A filter press is a type of diversified filtering equipment and is characterized by its simple and easy to handle structure. Some examples are the "pressure filtration equipment" and "solid-liquid separation equipment", etc. which are the most used types in manufacturing processes as standard draining treatment equipment.

Filter press diaphragm sheet

Our company has supplied filter press diaphragm sheets to filter press manufacturers throughout Japan for many years. Filter presses are used in diverse industrial fields and public facility fields, and a variety of characteristics for diaphragm sheets, including corrosion resistance, abrasion resistance, heat resistance, weather resistance, oil resistance and solvent resistance, are demanded according to usage conditions such as liquid type and temperature and solid type and particle size, etc.

Our company's diaphragm sheets

Our company's diaphragm sheets are available in a lineup of diverse materials to better respond to customer requirements.

Material Material no. Characteristics
Natural rubber S-5628 The material with which we have the most proven results
Natural rubber S-5636 Highly abrasion resistant material
Natural rubber S-5632 Material with superior physical properties and durability
Natural rubber S-5634 Material with superior physical properties and durability and is also not a pollutant
Natural rubber S-5672 Extremely hard material with low compressive deformation
Natural rubber S-5675 Standard food use material
Natural rubber S-5691 Highest hardness material with low compressive deformation
CR S-5458 Material which is fire resistant and has a low compression set
NBR S-5566 Material with superior oil resistance and chemical resistance
NBR S-5570 Material with oil resistance and chemical resistance for food uses
EPDM S-5866 Standard chemical resistance material
EPDM S-5865 Material for food use and with chemical resistance
EPDM S-5869 Material with superior fire resistance, chemical resistance and compression set
IIR S-5920 Material for food use and with chemical resistance

What is chloro-alkali electrolysis?

Chloro-alkali electrolysis is a technology for removing caustic soda and chlorine from salt.
Caustic soda and chlorine are important basic raw materials in a wide range of manufacturing industries, so chloro-alkali electrolysis is a basic part of almost every industry.

Gaskets for chloro-alkali electrolysis tanks

Our company has handled corrosion resistance for chloro-alkali electrolysis tanks for over 50 years, from the mercury process plant era and also has a wealth of experience since the shift to the ion exchange membrane method and uses all of the technologies and knowhow cultivated during this time to provide gaskets to electrolysis tank manufacturers.

We continue to provide rubber products for which corrosion resistance and abrasion resistance is demanded to a large number of customers.
Contact us with any issues you have related to rubber products which require corrosion resistance or abrasion resistance.

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