203 Piece Nitrile Air Conditioning O Ring Assortment

203 nitrile O-rings in a pre-packaged assortment covering the sizes used at A/C fitting connections on domestic and import vehicles. Every A/C hose and line disconnect requires the O-ring to be replaced — using the old ring is a leading cause of post-repair refrigerant leaks. This assortment keeps the right size in reach for any fitting connection without searching through individual bags. What's Included Nitrile (NBR) O-rings — sized for automotive A/C system fitting connections Multiple diameters and cross-section sizes covering common domestic and import A/C hose and line connections 203 pieces total Specifications Material Nitrile (NBR — Acrylonitrile Butadiene Rubber) Application Automotive A/C system — hose and line fitting connections Refrigerant compatibility R-134a and comparable refrigerant oil systems Total pieces 203 Supplier Auveco Best For A/C and refrigeration shops — every hose and line fitting disconnected during A/C service requires a new O-ring on reassembly; a stocked assortment prevents a return trip to the parts counter mid-job General automotive service shops — A/C O-ring replacement comes up during compressor, condenser, and evaporator repairs on almost every vehicle; having the right size in stock reduces cycle time Fleet maintenance operations — mixed fleets require a variety of O-ring sizes across models; this assortment covers the most common fitting sizes without managing dozens of individual part numbers Why Nitrile for A/C O-Rings? Automotive A/C O-rings need to seal against refrigerant and refrigerant oil (PAG or POE) under pressure while withstanding wide temperature swings — from cold engine-off conditions to the heat generated by a running compressor. Nitrile rubber (NBR) provides good resistance to PAG and mineral-based oils and handles the temperature range of automotive A/C systems reliably. A/C O-rings should always be replaced whenever a fitting is disconnected, even if the old ring looks intact. Once an O-ring has been seated and pressurized, it conforms to its seating surface; disturbing it breaks the seal. Installing a new, lubricated O-ring is the only reliable way to prevent a refrigerant leak after reassembly. Always lubricate O-rings with clean refrigerant oil before installation — dry O-rings can twist or pinch in the fitting groove. Questions about material compatibility or sizing? Contact us. Shipping & Ordering Ships within 1–2 business days from our warehouse Volume pricing available — save up to 20% when ordering 3 or more Reorder regularly? Ask us about a B2B account with a quarterly restock cadence and custom pricing — contact us