Yong’in eshiklarining yong’inga chidamliligining sababi juda oddiy, asosan po’latdan, o’tga chidamli yog’ochdan yoki o’tga chidamli yog’ochdan yasalgan buyumlardan tashqari noorganik yonmaydigan materiallardan foydalanish. Yong’inga qarshi eshiklar faqat yong’in tarqalishiga qarshi turishda vaqtinchalik rol o’ynaydi va o’ziga xos yong’inga chidamlilik vaqti yong’inga qarshi eshik materiallari va plombalarning yong’inga chidamliligiga bog’liq.

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