Threlaco Car A/C Repair Kit — 270-Piece O-ring & Compressor Gasket Set (R12/R134a) with Labeled Case

Threlaco's 270-piece car A/C repair kit is a complete service set of HNBR O-rings, compressor gaskets, valve cores and dust caps designed to repair and seal R12 and R134a automotive air-conditioning systems.

This all-in-one kit groups commonly replaced A/C sealing parts into a single organized case so DIY mechanics and professional technicians can quickly diagnose leaks, match the right size, and restore reliable refrigerant seals. The assortment includes 18 O-ring sizes (270 pieces), 60 compressor gasket seals, 77 dust caps and 39 valve cores, all stored in a labeled compartment tray with a clear size chart for fast part selection during repairs.

How do I find the correct O-ring or gasket for my vehicle?

Match the worn part to the labeled visual size guide in the storage case and verify by comparing diameters and cross-sections. If you keep the old part, measure its inner diameter and thickness and select the closest HNBR O-ring or metal-rubber compressor gasket from the tray.

• Use the printed size chart in the dividers to match ID and cross-section.
• Compare old part against sample slots before installing.
• Choose HNBR O-rings for refrigerant lines and rubber-metal gaskets for compressor flanges.

What materials are included and why do they matter?

Threlaco includes HNBR O-rings, metal-thickened compressor gaskets with rubber washers, and brass/aluminum valve cores to resist heat, ozone and refrigerant chemicals. Durable materials reduce premature degradation and help maintain leak-free seals under typical automotive pressures and temperatures.

• HNBR O-rings resist thermal breakdown and refrigerant exposure.
• Thickened metal gaskets preserve flat sealing surfaces under load.
• Corrosion-resistant valve cores provide secure port sealing and serviceability.

What repairs and maintenance tasks can I do with this kit?

The kit supports common A/C service tasks such as replacing leaking O-rings at hose fittings, swapping compressor flange gaskets, renewing dust caps, and installing new valve cores during system evacuation and recharge. It’s suited for leak repair, routine preventive maintenance, and topping-up seals after component replacement.

• Replace refrigerant line O-rings at fittings and junctions.
• Renew compressor gaskets when changing compressors or clutch assemblies.
• Swap valve cores and dust caps during service to secure ports and prevent contamination.

How is the kit organized for efficient use in a shop or garage?

Parts are arranged in a compartmentalized hard plastic case with each slot clearly labeled and a visual size guide printed on the lid. The layout reduces time spent searching for the right part, minimizes cross-contamination of small components, and keeps inventory visible for reordering.

• Compartment tray stores each size separately for quick selection.
• Visual size chart on the lid speeds identification under workshop lighting.
• Compact case fits in service carts or garage drawers for convenient access.

Who is this for: The Threlaco 270-piece A/C repair kit suits automotive DIYers, independent mechanics and fleet maintenance teams who handle R12 and R134a systems and need a broad, service-ready selection of seals and service parts. It’s particularly useful for technicians who prefer to keep a full range of O-rings, gaskets and valve cores on hand to complete on-the-spot repairs without waiting for individual parts to arrive.