Sterling Seal 210 Viton FKM O-Ring – 75A Durometer, 3/4 ID X 1 OD, 1/8 Width, 10-Pack

About This Product

These Sterling Seal Viton O-rings are solid little workhorses for all kinds of sealing jobs.
They're made from FKM (fluorocarbon rubber), which means they can handle some serious heat – from -15°F all the way up to 400°F – and they laugh at fuels, oils, and a bunch of harsh chemicals.

Each ring has a 75A durometer, so they're firm enough to resist squishing but still flexible enough to seal nicely between overlapping surfaces like flanges, valves, or cylinders.
The size is 3/4 inch inside diameter, 1 inch outside diameter, and 1/8 inch cross-section – a pretty common size for lots of equipment.
They're black, round, and look like a tiny donut.

Just avoid using 'em with brake fluid, steam, ammonia, or strong alkalis – that's their weak spot.

These meet the AS568A aerospace standard, so you know they're legit.

Ten in a pack, ready for your engine, faucet, or hydraulic rig.