421 Buna-N O-Ring, 70A Durometer, Round, Black, 4" ID, 4-1/2" OD, 1/4" Width (Pack of 5) June_2023_update Get 4 pairs of five

Get 4 pairs of five toe socks with 1 purchase

Then device will automatically suck as it closes to magnetic mount

Used widely in power transformers

The black vinyl cover protects clear plastic pages where you can slide in business cards you need to keep handy

and they are safe for children to use

421 Buna-N O-Ring, 70A Durometer, Round, Black, 4" ID, 4-1/2" OD, 1/4" Width (Pack of 5) June_2023_update Get 4 pairs of five421 Buna N O Ring, 70A Durometer, Round, Black, 4" ID, 4 1 2" OD, 1 4" Width (Pack of 5) This O ring is made of black Buna nitrile, is round in cross section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Buna nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. It can be used in temperatures between 30 degrees F ( 34 degrees C) to 250 degrees F (121 degrees C), and is