Buna-N O-Rings
100 Pack Buna-N O-Rings - 1" ID, 70A Durometer, Reliable Temperature Range
The black color doesn't fade easily, so it stays looking fresh for a long time.
10-Pack of 5 3/4'' Oil-Resistant Buna N O-Rings for Reliable Sealing Solutions
You will find that the black surface is durable enough for everyday bumping and scraping.
new 241 Buna-N O-Ring, 70A Durometer, Black, 3-7/8" ID, 4-1/8" OD, 1/8" Width
Rounded corners includes rivets, so it's less likely to get damaged when moved frequently.