Question 12: What is fluorine? What are its characteristics?
June 02,2018 General Questions about Hose/Tube/Fittings
Answer 12: Fluorine is a material, which shows high chemical resistance, non-adhesiveness, and water-repellent properties.
Question 13: Why does PVC hoses get harden as time passes by?
November 12,2018 General Questions about Hose/Tube/Fittings
Answer 13: PVC hose is originally very soft, because it contains plasticizer. However, plasticizer gradually flows out as the hose transfers oil or the hose exposed to the sun. Once the certain amount of plasticizer flows out, the hose turns hard.
Question 14: Why did you develop a multi-layer tube or hose?
November 12,2018 General Questions about Hose/Tube/Fittings
Answer 14: A multi-layer tube or hose allows to add more than one function. For instance, customers have used teflon tube for high chemical resistance. However, they suffer from the problem of hardness. Our E-SJ, which is made of ETFE fluorine and PU, has both characteristics: high chemical resistance and flexibility.
Question 15: What is minimum bend radius? What is the definition?
October 29,2020 General Questions about Hose/Tube/Fittings
Answer 15: Minimum bend radius is NOT equal to product softness (flexibility). The value of Minimum Bend Radius is defined as the radius (R) when (d') is multiplied by 95% at room temperature (HAKKO Internal Rule). Thus, Minimum Bend Radius is the index to measure the flatness of the tubing or hose. The more flat ...
Question 16: We are quite not sure about the unit (MPa, Bar, PSI and Feet). Do you have a unit conversion table?
October 30,2020 General Questions about Hose/Tube/Fittings
Answer 16: Yes, please refer to the following table. Unit A is almost equal to Unit B.
Question 17: What is UL94 regulation?
November 30,2020 General Questions about Hose/Tube/Fittings
Answer 17: UL94 is a "Test for Flammability of Plastic Materials for Parts in Devices and Appliances." There are six flammability standards (UL94-5VA, UL94-5VB, UL94-V0, UL94-V1, UL94-V2 and UL94-HB). UL94-5VA is the most inflammable standard, while UL94-HB is the most flammable standard. We can produce a hose/tubing that meets your required flammable standard.
Question 5: Do you have a food grade certificate for HAKKO products?
November 12,2018 Regulations and Certificate
Answer 5: Yes, you can download online. Please visit each product page and click "Food Grade Certificate Request."
Question 18: We are looking for a hose for 20A pipe. Do you have any suitable size?
June 25,2022 General Questions about Hose/Tube/Fittings
Answer 18: Pipe size is not always equal to our standard catalog size. For more information, please take a look at the following table.
Question 6: Our customers asked whether or not HAKKO products are UL-certified. Do you have that data?
November 12,2018 Regulations and Certificate
Answer 6: No. HAKKO products are not certified with UL. However, we can provide a third-party UL certificate for some products. Please click here.
Question 7: Are HAKKO products FDA compliant?
November 12,2018 Regulations and Certificate
Answer 7: We are sorry to inform you that HAKKO catalog products are not compliant with FDA. However, we can produce a hose with FDA-approval materials. If you are interested in our custom-made hose with FDA approval, please contact us from here.
