HNBR O Ring Kit 270 Piece - Mastercool

The Mastercool 91339 HNBR O-Ring Kit provides professional technicians with a comprehensive 270-piece assortment of high-quality O-rings. Engineered for dependable sealing performance, these O-rings are suitable for demanding automotive A/C, refrigeration, hydraulic, and industrial systems, offering a reliable solution for maintaining system integrity in challenging service environments.

Key Features

• Durable HNBR Construction: Manufactured from Hydrogenated Nitrile Butadiene Rubber, these O-rings offer robust resistance to modern refrigerants such as R134a and R1234yf, along with common PAG/ester oils and shop chemicals, contributing to extended seal life.
• Comprehensive 270-Piece Assortment: This kit includes a broad selection of common O-ring sizes, ensuring compatibility with various fittings, valves, hoses, and compressors encountered in professional automotive and industrial applications.
• High-Temperature and Pressure Resilience: Engineered to maintain sealing integrity in demanding conditions, including high-temperature engine bays and pressurized A/C and refrigeration systems, preventing leaks and ensuring system efficiency.
• Organized and Labeled Hard Case: Features clearly labeled compartments for quick identification and retrieval of the correct O-ring size, streamlining diagnostic and repair processes on the job site.
• Shop and Mobile Ready Design: With a compact and durable case, this kit is designed for efficient transport and organized storage in service carts, toolboxes, and field kits, making it ideal for mobile service.

Applications

This O-ring kit is essential for professional mechanics and technicians working on:

• Automotive and light-duty truck A/C systems, including late-model passenger cars, SUVs, and commercial vehicles.
• A/C service, retrofits, and compressor replacements.
• HVAC and refrigeration system maintenance in both shop and field environments.
• Hydraulic and pneumatic equipment sealing within industrial settings.
• General sealing tasks requiring resistance to oils, refrigerants, and heat.

Specifications

• Manufacturer: Mastercool
• Model Number: 91339
• Material: HNBR
• Quantity: 270 pieces
• Case Dimensions: 8" x 5" x 2"
• Approximate Weight: 2 lb