KS TOOLS assortimento da 270 O-ring HNBR per climatizzatori auto, 18 misure metriche, da -40°C a +150°C, verde 970.0340

With a temperature range from -40°C to +150°C, this 270-piece O-ring assortment handles the thermal extremes of automotive air conditioning systems without losing its seal. Each ring is molded from hydrogenated nitrile butadiene rubber (HNBR), a material that shrugs off R134a and R1234yf refrigerants, compressor oils, and the ozone and wear that quickly degrade ordinary rubber.

Overview

The KS TOOLS 970.0340 set brings together 18 of the most common metric O-ring sizes used in vehicle A/C service. All 270 rings are organized in a practical plastic assortment box with labeled compartments, so the right size is always at hand. The green HNBR compound offers a Shore hardness of approximately 70 A, balancing flexibility for easy installation with the firmness needed for a lasting, leak-free connection.

What stands out

• 270 O-rings in 18 metric sizes, covering the majority of automotive A/C fittings
• HNBR material resists refrigerants R134a and R1234yf, oils, and fuels
• Broad service temperature range from -40°C to +150°C
• Excellent resistance to wear, aging, and ozone for long service life
• Green color provides quick visual identification of HNBR compound
• Supplied in a sturdy plastic assortment box with size markings

Technical details

• Material: HNBR (hydrogenated nitrile butadiene rubber)
• Number of pieces: 270
• Number of sizes: 18 different metric sizes
• Temperature range: -40°C to +150°C
• Shore hardness: approx. 70 Shore A
• Colour: green
• Compatibility: R134a and R1234yf refrigerants
• Standard: metric
• Packaging: plastic assortment box

Our verdict

For workshops and mobile technicians who service modern vehicle A/C systems, this KS TOOLS assortment delivers the right material, the right sizes, and the right organization. The HNBR compound and wide temperature range ensure dependable sealing in both high-pressure and low-pressure circuits, while the labeled case keeps the workbench efficient.