Ko te papa takai whakarewa he rauemi hiri e whakamahia whānuitia ana, he mea hanga mai i ngā momo konganuku rerekē (pērā i te maitai kore waikura, te parahi, te konumohe) me te pepa koranu rānei. He pai tōna ngāwari me te ātete ki te pāmahana teitei, te ātete ki te pēhanga, te ātete ki te waikura me ētahi atu āhuatanga, nō reira he whānuitia ngā whakamahinga i roto i te umanga takirere.

He mātanga te whakamahi a te papa takai whakarewa i te ātete wera, te pakari me te kaha o te whakarewa me te ngawari o ngā rauemi kore-whakarewa, nō reira he pai ake te mahi hiri, ā, ko te mahi a te papa graphite ngāwari takai rīpene maitai kore waikura te mea pai rawa atu. He iti ake te ōwehenga kōpeketanga i te papa takai asbestos, ā, kāore he hapa o te turuturu o te muka asbestos. I roto i te reo hinu, ka whakamahia te 0Cr13 mō ngā rīpene whakarewa, ko te 1Cr18Ni9Ti ia e taunakitia ana mō ētahi atu reo.

He kowiri tira me te papa takai karāpeti ngāwari i roto i te reo hau, te whakamahi i te pēhanga o te 14.7MPa, ka taea te whakamahi i roto i te wai tae atu ki te 30MPa. Te pāmahana -190~+600℃ (ki te kore he hāora, ka taea te whakamahi i te pēhanga iti ki te 1000℃).

He pai te papa takai mō ngā whakawhiti wera, ngā tauhohenga, ngā paipa, ngā takirere, me ngā pātaki whakauru me te putanga papu me ngā rerekētanga pēhanga me te pāmahana nui. Mō ngā pēhanga reo-waenga, teitei ake rānei me ngā pāmahana neke atu i te 300°C, me whakaaro ki te whakamahinga o ngā mowhiti o roto, o waho, o roto rānei. Mena ka whakamahia te pātaki kōpiko me te kōpiko, he pai ake te papa takai me te mowhiti o roto.

Ka taea hoki te whiwhi i tētahi pānga hiri pai mā te whakapiri i ngā pereti karāpeti ngāwari ki ngā taha e rua o te papa takai karāpeti ngāwari. Ko te kohua wera para o tētahi wheketere tongi matū nui he taputapu matua mō te pāmahana teitei me te pēhanga teitei. Ka whakamahia te papa takai karāpeti ngāwari me te mowhiti o waho, e kore e turuturu ina kī te kawenga, engari e turuturu ina whakaitihia te kawenga. Ka tāpirihia he pereti karāpeti ngāwari 0.5mm te matotoru ki ngā taha e rua o te gasket ka tapahia kia rite ki te āhua pewa. Ko te wāhanga hononga he mea hanga ki te hononga porowhita whakarara, he pai te whakamahi.