990-Piece Nitrile Rubber O-Ring Kit – AC & High-Pressure Seals
990-Piece Nitrile Rubber O-Ring Kit – AC & High-Pressure Seals
990-Piece Nitrile Rubber O-Ring Assortment Kit
Keep your air conditioning systems, hydraulic lines, and high-pressure fittings leak-free with this comprehensive 990-piece nitrile rubber O-ring kit. Spanning 20 different sizes in a single organized box, this assortment is the ultimate go-to for HVAC technicians, auto mechanics, plumbers, and serious DIYers who need the right seal on hand — every time.
Why Choose This O-Ring Kit?
- 990 pieces across 20 sizes — a size for virtually every common fitting and port
- Nitrile rubber (NBR) material — excellent resistance to oils, fuels, refrigerants, and high-pressure environments
- Durable & wear-resistant — maintains shape and elasticity under repeated use
- Compact storage box — neatly organized so you can find the size you need instantly
- Ideal for air conditioning maintenance — compatible with AC lines, compressors, valves, and fittings
- Also great for automotive, plumbing, appliance repair, and industrial applications
Complete Size Breakdown (990 pcs total)
| Quantity | Size (ID × CS mm) | Quantity | Size (ID × CS mm) |
|---|---|---|---|
| 120 pcs | 1 × 2 mm | 120 pcs | 2.5 × 1 mm |
| 100 pcs | 3 × 1 mm | 100 pcs | 4 × 1 mm |
| 80 pcs | 4.5 × 1 mm | 80 pcs | 5 × 2 mm |
| 80 pcs | 6 × 2 mm | 80 pcs | 7 × 2 mm |
| 60 pcs | 8 × 2 mm | 40 pcs | 9 × 2 mm |
| 30 pcs | 10 × 2 mm | 12 pcs | 12 × 3 mm |
| 12 pcs | 13 × 3 mm | 12 pcs | 14 × 2.5 mm |
| 12 pcs | 16 × 2 mm | 10 pcs | 17 × 2.5 mm |
| 12 pcs | 18 × 2 mm | 10 pcs | 20 × 2 mm |
| 10 pcs | 22 × 2 mm | 10 pcs | 25 × 2.4 mm |
Product Specifications
- Total Pieces: 990
- Material: Nitrile Rubber (NBR)
- Color: Black
- Box Dimensions: 19 × 13.2 × 2.3 cm (7.48 × 5.20 × 0.91 in)
- Country of Origin: Made in China
Package Includes
- 1 × Organized storage box containing all 990 O-rings across 20 sizes
Note: Slight color variation may occur between screens. Manual measurement tolerance of ±1–3 mm applies.
For best practices on working safely with HVAC and high-pressure systems, refer to guidelines from OSHA's workplace safety resources.
Frequently Asked Questions
Q: What material are these O-rings made from, and why does it matter?
A: These O-rings are made from nitrile rubber (NBR), a synthetic elastomer known for its excellent resistance to oils, refrigerants, hydraulic fluids, and high-pressure environments. This makes the nitrile rubber O-ring kit especially well-suited for air conditioning systems and automotive applications where chemical exposure is common.
Q: How many sizes are included in the 990-piece O-ring kit?
A: The kit includes 20 distinct sizes ranging from 1×2 mm up to 25×2.4 mm, covering the most frequently needed dimensions for AC maintenance, plumbing, and general mechanical repairs. Each size is stored in its own compartment within the organized storage box.
Q: Is this O-ring assortment suitable for air conditioning high-pressure lines?
A: Yes. The nitrile rubber O-rings in this kit are designed to withstand high-pressure environments, making them a reliable choice for sealing air conditioning compressor fittings, refrigerant lines, and valve connections. Always verify the specific pressure and chemical compatibility ratings for your application before installation.
Q: Can this kit be used for applications beyond air conditioning?
A: Absolutely. While the kit is marketed for AC maintenance, the wide size range and durable nitrile rubber construction make it equally useful for automotive hydraulic systems, plumbing fittings, appliance repair, pneumatic tools, and general industrial sealing tasks.