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

O-Ring Assortments

203 Piece Nitrile Air Conditioning O Ring Assortment