Description
A/C O-ring kit — smaller sizes (48-compartment)
The smaller-diameter half of the A/C O-ring range in one organized case — 240 HNBR O-rings sorted across 48 compartments. It’s one of the size-range kits that make up our full O-ring master, so you can stock exactly the diameters you use most — or combine kits for total coverage.
Stock the sizes you use
Only the diameters you need
Focused range
Covers the smaller-diameter portion of the A/C O-ring range, so you’re not paying for sizes you rarely touch.
HNBR material
Hydrogenated-nitrile O-rings resist refrigerant, PAG/POE oils, heat, and pressure for durable A/C seals.
Organized case
240 O-rings sorted across 48 labeled compartments for fast, no-guess selection.
Refillable
Each O-ring is a stocked part number — reorder individual packs to restock a compartment.
Builds the master
Combine with the other size kits to assemble the full 936-piece O-ring master set.
Shop value
A cost-effective way to keep the working O-ring sizes on hand and cut wrong-part delays.
240 O-rings, smaller-size range
This kit holds 240 HNBR O-rings covering the smaller-diameter portion of the A/C O-ring range, organized one style per compartment. Every O-ring is a stocked part number, so the kit is fully refillable — reorder any O-ring 10-pack to restock a compartment. Together with the other size kits it makes up the full master range (roughly 4.39–36 mm ID).
Build the set that fits your bench
These size-range kits combine into the full master. Grab the range you need, or step up to everything.
Prefer a starter or everything at once? See the O-Ring Start-Up Kit (233-3179, 216 pieces) or the O-Ring Master (233-3180, 936 pieces).
Kit details
O-ring size kit FAQ
What’s in this kit?
What material are the O-rings?
Is it refillable?
How does it relate to the master kit?
Shop A/C service kits
Browse O-ring, sealing-washer, and valve-core kits and set your quantities in one place.
| Image | Product Name | SKU | Price | In Stock | Quantity | Add To Cart |
|---|---|---|---|---|---|---|
|
Air Tech Master O-Ring Kit 160 part numbers & 936 pieces | 233-3180 | $197.28 | In stock | ||
|
Master Sealing Washer, Gasket, Valve Core /Cap And 1234YF Cap & Core Kit | 233-3181P | $341.50 | In stock | ||
|
(Most Popular) O-Ring Start Up Kit 48 Compartments | 233-3179 | $50.50 | In stock | ||
|
(Smaller Sizes) O-Ring Master Kit 48 Compartment | 233-3176 | $54.42 | In stock | ||
|
(Medium Sizes) O-Ring Master Kit 48 Compartment | 233-3177 | $54.42 | In stock | ||
|
(Larger Sizes) O-Ring Master Kit 24 Compartment | 233-3178 | $65.18 | In stock | ||
|
1234YF Universal Service Caps and Valve Core Kit | 233-6101 | $99.00 | In stock | ||
|
Sealing Washer Master 48 Compartment Kit | 233-3000 | $197.14 | In stock |
Add the smaller-size kit
In stock and ready to ship. Want the full master or a different size range? See the family above, or call and we’ll help.
Add to cart ↑ Contact usConfirm the correct O-ring size and material for your application before installing.
