{"product_id":"ac-oring-kit-hnbr-defender","title":"AC O-Ring Kit, HNBR, R134a-Compatible — Land Rover Defender","description":"\u003ch2\u003eAC O-Ring Kit, HNBR Type, R134a-Compatible — Land Rover Defender\u003c\/h2\u003e\n\u003cp\u003eEvery o-ring at every joint opened during an AC service must be replaced. Defender AC systems from this era use original rubber o-rings that will have hardened with age and UAE heat — reusing them after opening joints is a common cause of a system that won't hold vacuum after a major service.\u003c\/p\u003e\n\u003cp\u003eHNBR (Hydrogenated Nitrile Butadiene Rubber) is the correct material for R134a systems. It resists both PAG and Ester oils and handles the higher operating pressures of R134a better than original-spec nitrile rubber.\u003c\/p\u003e\n\u003cp\u003eSee the \u003ca href=\"\/blogs\/repair-guides\/defender-v8-ac-repair-service-guide-uae\"\u003eDefender V8 AC Repair \u0026amp; Service Guide\u003c\/a\u003e for the full service sequence.\u003c\/p\u003e\n\u003ch3\u003ePart Number\u003c\/h3\u003e\n\u003cp\u003eMastercool 91339\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eUniversal — covers all common AC fitting sizes. Suitable for Land Rover Defender and any other R134a AC system.\u003c\/p\u003e\n\u003ch3\u003eWhat You Get\u003c\/h3\u003e\n\u003cp\u003e270 assorted HNBR o-rings across common AC fitting sizes, R134a and R12 compatible.\u003c\/p\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":50261351235834,"sku":"OBSAE-DEFS-00076","price":279.0,"currency_code":"AED","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/5131\/8266\/files\/Mastercool_91339_R12_and_R134a_O-Ring_Assortment_GMT400_GMC.png?v=1788280737","url":"https:\/\/obscureparts.com\/products\/ac-oring-kit-hnbr-defender","provider":"Obscure Parts","version":"1.0","type":"link"}