Standard AS568 O-ring
AS568-321 O-Ring, 1.162 x 0.210 in (29.51 x 5.33 mm)
The AS568-321 O-ring (dash 321, also written 2-321) has an inside diameter of 1.162 in (29.51 mm), a cross section of 0.210 in (5.33 mm), nominal 3/16 inch, and an outside diameter of 1.582 in (40.17 mm). We supply it in Viton (FKM), EPDM or Silicone, in packs of 10, 25 and 100.
Size
| AS568 size | -321 |
|---|---|
| Inside diameter (ID) | 1.162 in (29.51 mm) |
| Cross section (CS) | 0.210 in (5.33 mm), nominal 3/16 in |
| Outside diameter (OD) | 1.582 in (40.17 mm) |
Rubber and pack prices
| Rubber | 10-pack | 25-pack | 100-pack |
|---|---|---|---|
| Viton (FKM) 75AGood for heat, fuels and many chemicals. | $10.99 | $23.99 | Request a quote |
| EPDM 70AGood for hot water, steam and chlorinated or chloraminated water. | $6.99 | $13.99 | $58.99 |
| Silicone 70A (orange)Good for a wide temperature range and food-contact use. | $5.99 | $12.99 | $52.99 |
A size match is not a fit claim for your equipment. Some sizes ship from stock; others have a 2-3 business day lead time before they ship. Not for oxygen, medical, aviation, scuba or other safety-critical use.