Company Details
Operational Address : 306, Koyagimachi, Takasaki-shi, Japan
Business Type : Manufacturer
Location : Gunma, Japan
Year Established : 1963
Number Of Employees : 51 - 100 People
Export Percentage :
Production Lines :
R&D Staff :
Total Annual Revenue : US$10 Million - US$50 Million
Main Products : Fire-proof Rubber, Intumescent Rubber, Water Swollen Rubber Sealant, Butyl Adhesive Tape, R&D For Rubber Compounds,
Country/Region : Japan
Links : Japan Security & Protection, Japan Firefighting Supplies, Japan Fire Extinguisher,
Company Introduction
CRK was established in 1963 in gunma prefecture northern part of Tokyo. Since then, we offer various kinds of rubber materials such as rubber compound, molded rubber, and tapes.
One of our main products are graphite based intumescent rubber materials applied for variety of through-penetration wall parts. They expand more than 10 times in case of fire and prevent further passage of flame. We can provide these fire-proof materials at various kinds of tapes, putty, and sponges.
Also, we produce water suell rubber sealant tapes made out of chloroprene rubber and water absorption resin, and butyl adhesive tapes applied for water-proof construction materials.
In 2007, our fire-proof materials received the Nakagawa award, which represents the most nobel product in gunmma prefecture in the year.
Furthermore, our company has received ISO9001:2008 quality management system in 2009 to keep quality of our products high.
Our annual sales amount to about 14 million US *.
Our company has R&D department, so we are able to develop new rubber compounds whatever you want.
Company Information
Contact Person : Mr. Hiromasa Minowa
Telephone : 
Fax Number : 
Address : 306 Koyagimachi,
Fax : 81
Zip/Post Code : 370-0071
Website : Visit website
Company Product
- CRK expanded rubber
- CRK expansion sponge
- CRK fire resistant block material
- CRK fire resistant block
- CRK fire resistant material
- CRK fire resistant sponge
- CRK fire resistant
- CRK fire retardant material
- CRK fire retardant rubber material
- CRK fire retardant rubber tape
- CRK fire retardant rubber
- CRK fire-resistance material
- CRK fireproof retardant sponge tape
- CRK fireproof rubber
- CRK fireproofing rubber material
- CRK heat insulator sponge
- CRK insulation block
- CRK intumescent fire material
- CRK intumescent fireproofing
- CRK intumescent material
- CRK rubber sealings
- CRK sealing tape
- CRK swelling tape
- CRK swelling water rubber tape
- CRK thermal expansion rubber
- CRK thermal expansion sponge block
- CRK thermal expansion sponge tape
- CRK thermal expansion sponge
- CRK thermal insulation material
- CRK water leak tape
- CRK waterproof tape
- Intumescent Fireproofing Putty
- crk fire resistant butyl rubber
- crk fire resistant
- crk fire retardant
- crk fireproof
