O-Ring Assortment Kit 18 Sizes Sealing Gasket Washer 225 Pieces Rubber Assortment Set for Automobile Electronic Plumbing General Repair Replacement Car AC

The 225 Pieces Rubber O-Ring Assortment Kit (18 Sizes) is a versatile sealing solution designed for general maintenance across automotive, plumbing, and electronic applications. These kits typically use Nitrile Rubber (NBR), also known as Buna-N, which is valued for its resistance to oil, water, and heat.

Key Specifications
Material: High-quality Nitrile Rubber (NBR).
Temperature Range: Generally withstands temperatures from -40°C (-40°F) to +120°C (+248°F).
Quantity: 225 pieces distributed across 18 popular metric sizes.
Storage: Typically comes in a transparent, labeled plastic organizer box for easy size identification.

Size Breakdown (Metric)
Most standard 225-piece kits follow this specific size distribution (Inner Diameter x Thickness):

Small (20 pcs each): 3x1mm, 4x1mm, 4.5x2mm, 5x2mm, 6x2mm, 6×2.5mm, 6x3mm, 7x2mm, 8x2mm.
Large (5 pcs each): 9x2mm, 10x2mm, 12x3mm, 13x3mm, 14×2.5mm, 17×2.5mm, 18x4mm, 20x2mm, 22x2mm.
Common Applications
Automotive: Sealing fuel lines, oil leaks, and general under-the-hood repairs.
Plumbing: Fixing leaky faucets, shower heads, and water pipe connections.
General Repair: Suitable for pressure washers, pumps, air conditioning (AC) compressors, and hydraulic systems.

Expert Tips for Use
Sizing: Always measure the Inner Diameter (ID) and Cross-Section (Thickness) of your old O-ring with calipers for an exact match.
Lubrication: Applying a small amount of silicone grease can enhance the sealing performance and prevent tearing during installation.
Limitations: While NBR is excellent for oil and water, it may not be suitable for extreme high-heat environments where Viton O-rings are preferred (e.g., above 200°C).
Would you like to know which lubricants are safest to use with Nitrile Rubber for specific plumbing or automotive tasks?