He mea hanga ngā topenga P kua whakakikoruatia ki te rapa mai i te maitai ngawari ngāwari, i te maitai kore waikura rānei, he whitiki kotahi te wahi, me te whakakikorua rapa EPDM. Ko te hanganga wahi kotahi te tikanga kāore he hononga e tino kaha ai te topenga. He hoahoa roa te kōhao o runga, e ngāwari ai te whakauru i te topenga.

He nui te whakamahinga o ngā topenga P i roto i ngā ahumahi maha mō te whakau i ngā paipa, ngā ngongo me ngā taura. Mā te arai EPDM e piri pai ana ka taea e ngā topenga te whakapūmau i ngā paipa, ngā ngongo me ngā taura me te kore e taea te pakaru, te kino rānei ki te mata o te wāhanga e whakapūmautia ana. Ka mimiti hoki te arai i te wiri, ā, ka ārai i te urunga o te wai ki roto i te wāhi whakapūmau, me te painga anō hoki o te whakahaere i ngā rerekētanga rahi nā ngā huringa pāmahana. Kua whiriwhiria te EPDM mō tōna ātete ki ngā hinu, ngā hinu me ngā ātete pāmahana whānui. He rara whakakaha motuhake tō te whitiki topenga P e pupuri ana i te topenga kia ōrite ki te mata kua whakapūmautia. Ka werohia ngā kōhao whakapūmau kia whakaaetia he poro M6 paerewa, ā, ka whakaroahia te kōhao o raro kia taea ai te whakarerekētanga e tika ana ina whakarārangihia ngā kōhao whakapūmau.

Ngā Āhuatanga

• He ātete pai ki te huarere UV

• He ātete pai ki te ngokingoki

• He pai te ātete ki te pakū

• Ātete matatau ki te ozone

• Te ātete tino pakari ki te koroheketanga

• Kore he halogen

• Kāore e hiahiatia he taahiraa whakapakari

Whakamahinga

He rapa EPM te mea e whakakīia ana ngā topenga katoa, ā, he tino ātete ki ngā hinu me ngā pāmahana tino kino (-50°C ki te 160°C).

Kei roto i ngā tono ko te wāhanga miihini me te anga o te motuka, ngā taura hiko, ngā paipa, ngā paipa hau,

ngā tāutanga mīhini me te whakamatao.