Standard AS568 O-ring
AS568-178 O-Ring, 9.737 x 0.103 in (247.32 x 2.62 mm)
The AS568-178 O-ring (dash 178, also written 2-178) has an inside diameter of 9.737 in (247.32 mm), a cross section of 0.103 in (2.62 mm), nominal 3/32 inch, and an outside diameter of 9.943 in (252.56 mm). We supply it in Buna-N (nitrile), Viton (FKM), EPDM or Silicone, in packs of 10, 25 and 100.
Size
| AS568 size | -178 |
|---|---|
| Inside diameter (ID) | 9.737 in (247.32 mm) |
| Cross section (CS) | 0.103 in (2.62 mm), nominal 3/32 in |
| Outside diameter (OD) | 9.943 in (252.56 mm) |
Rubber and pack prices
| Rubber | 10-pack | 25-pack | 100-pack |
|---|---|---|---|
| Buna-N (nitrile) 70AGood for water, air and petroleum oils; the usual choice for filter housings. | $9.99 | $20.99 | Request a quote |
| Viton (FKM) 75AGood for heat, fuels and many chemicals. | $30.99 | $79.99 | Request a quote |
| EPDM 70AGood for hot water, steam and chlorinated or chloraminated water. | $14.99 | $34.99 | Request a quote |
| Silicone 70A (orange)Good for a wide temperature range and food-contact use. | $18.99 | $51.99 | Request a quote |
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.