Rufin bututun kumfa mai sassauƙa na Kingflex, wanda kuma aka sani da roba, ya ƙunshi robar roba ta roba. Manyan nau'ikan roba guda biyu da ake samu a kasuwa sune robar nitrile butadiene tare da PVC (NBR/PVC). Kayan rufin suna da yawa a wurare daban-daban don rufin zafi da rage hayaniya, waɗanda ake amfani da su a cikin bututu da kayan aiki daban-daban, kamar su na'urar sanyaya iska ta tsakiya, na'urorin sanyaya iska, gini, sinadarai, magunguna, kayan lantarki, jiragen sama, masana'antar kera motoci, wutar lantarki ta zafi da sauransu.
| Bayanan Fasaha na Kingflex | |||
| Kadara | Naúrar | darajar | Hanyar Gwaji |
| Matsakaicin zafin jiki | °C | (-50 - 110) | GB/T 17794-1999 |
| Nisa mai yawa | Kg/m3 | 45-65Kg/m3 | ASTM D1667 |
| Tururin ruwa yana iya shiga ta hanyar tururin ruwa | Kg/(mspa) | ≤0.91×10 ﹣¹³ | DIN 52 615 BS 4370 Part 2 1973 |
| μ | - | ≥10000 | |
| Tsarin kwararar zafi | W/(mk) | ≤0.030 (-20°C) | ASTM C 518 |
| ≤0.032 (0°C) | |||
| ≤0.036 (40°C) | |||
| Ƙimar Wuta | - | Aji 0 da Aji 1 | BS 476 Kashi na 6 kashi na 7 |
| Ma'aunin Yaɗuwar Wuta da Hayaki da Ya Haifar |
| 25/50 | ASTM E 84 |
| Ma'aunin Iskar Oxygen |
| ≥36 | GB/T 2406, ISO4589 |
| Shan Ruwa,% ta Girman | % | kashi 20% | ASTM C 209 |
| Daidaito Mai Sauƙi |
| ≤5 | ASTM C534 |
| Juriyar fungi | - | Mai kyau | ASTM 21 |
| Juriyar Ozone | Mai kyau | GB/T 7762-1987 | |
| Juriya ga UV da yanayi | Mai kyau | ASTM G23 | |
Yana samar da ingantaccen kariya a manyan yanayin zafin jiki, daga digiri -50 zuwa 110 na Celsius.
Ƙananan halayen iskar zafi suna haifar da kyakkyawan rufi ga bututun AC, bututun ruwa masu sanyi, bututun jan ƙarfe, bututun magudanar ruwa, da sauransu.
Yawan juriya ga yaɗuwar tururin ruwa yana haifar da shan ruwa mara kyau.
Aji na O yana ba da mafi kyawun aikin wuta kamar yadda aka tsara a cikin ƙa'idodin gini
Ba ya amsawa kuma yana ba da kyakkyawan juriya ga sinadarai, mai, da ozone
Sifili Sifili Sifili Ozone depletion
Samfuri ne mara ƙura da fiber