Nā Koina Hana o nā Mea Sila

ʻO ka hanaʻana o nā mea hoʻopaʻa inoa he mea nui ia e hōʻoia i ka hoʻopaʻa maikaʻi. ʻO ke koho ʻana i nā mea hoʻopaʻa paʻa ma luna o ke ʻano hana o nā mea sealing, e like me ka mahana, ke kaomi, ka hana hana a me ke ʻano neʻe. ʻO nā koi kumu no ka hoʻopaʻa ʻana i nā mea e like me kēia:

1. Loaʻa iā ia kekahi mau mea mechanical, e like me ka ikaika tensile, elongation, etc;

2. ʻO ka elasticity kūpono a me ka paʻakikī, hoʻonohonoho hoʻoemi liʻiliʻi;

3. Ke kū'ē i ka wela kiʻekiʻe a me ka haʻahaʻa, ʻaʻohe decomposition a me ka palupalu i ke kiʻekiʻe wela, ʻaʻohe paʻakikī i ka haʻahaʻa haʻahaʻa;

4. Hoʻohālikelike me ka mea hana, ʻaʻohe pehu, decomposition, paʻakikī, etc.

5. ʻO ke kūpaʻa oxygen maikaʻi a me ke kūpaʻa ʻelemakule, paʻa;

6. E hoʻopaʻa i ke kūpaʻa, ʻaʻohe corrosion o ka metala;

7. Hana maʻalahi a haʻahaʻa ke kumu kūʻai;