These silicone washers come in a clear, divided organizers box, which is very for storage and selection You can save trouble of tidying up and choosing the Size Different Size to meet your different needs, specially achieve a tight seal when used in plumbing, faucet and other industrial applications Soft and flexible Round Rings,, great for lubricating oil, water, air These Round Rings wash seal are selected from silicone, which is, oil, water and most silicone liquids and solvents They are durability and have long service life Wide use for garages, plumbers, workshops, window, electrical appliances, pumps, drain plugs And can metal-to-metal to protect cables, cables passing through firewalls, Manufacturer: LiRRvb